v. 7.2.0 -- 2 June 2026 • NEW -- The rangefinder now has an option to measure vertical angles only. If you know your horizontal distance to the outcrop, the app can calculate thickness of horizontal units in a cliff face (or measure the height of a treen, etc.). Just set the lower angle to the base of the unit and the upper angle to the top of the unit. There are lots of other potential uses for this function. • NEW -- When measuring a strike and dip with the device orientation, a green line will appear from topo to bottom on the stereonet face when the long axis of the phone is horizontal. An arrowhead on one end of the line shows the physical direction of the given strike direction. Explanation: Because the app measured the pole to the plane directly, you can place the phone on the bedding surface in any orientation. But, sometimes, you want to know where the strike line is (e.g., when collecting and marking an oriented sample). This allows you to find the actually strike line in the plane as well as determine which direction you should mark the sample so that it coincides with the measured strike line. • FIXED -- Switching between base maps now works more smoothly without showing a blank white screen. v. 7.1.0 -- 11 May 2026 • NEW -- Subsampling and smoothing contacts are now undoable. Just give your device a shake within 2 minutes of applying the subsampling or smoothing, and the old contact will be restored. Subsampling now uses the Ramer-Douglas-Peucker (RDP) algorithm for better results. The degree of subsampling can now be set with a slider control. As you move the slider, the number of vertices to be deleted will appear above the slider. • NEW -- Additional database integrity checks are now in place. The checks are carried out every time you open a database. If corruption is found, the problematic rows are reported. • NEW -- If the app experiences a hard crash (with no error message), the next time you start up the app, it will warn you of an abnormal exit and will inform you that it is starting up without opening up the last database used (just in case). You’ll need to open the database by going to the settings screen and tapping Open Project. With the new database integrity check, if the DB causes the problem, you will be informed when you try to open it. If the problem is with the tiny resume file, that will be rewritten when you open the database. This way, the app will remain operable, and you can troubleshoot the problem more effectively rather than continuing to crash repeatedly with no message and no recourse. V.7.0.2 -- 13 April 2026 • NEW -- Correction for camera bump on the back of modern phones. Modern iPhones and iPads have bumps or plateaus on the back to accommodate more powerful cameras, and rugged cases can make the back of the phone even more irregular. This means the back is no longer flat, which can impact measuring of strikes and dips by placing the device on the bedding or fault surface. This version can correct for that non-planarity: Go to the Settings Screen (gear icon) and tap the new option "Correction for Camera bump." You will be taken to a new screen entitled Camera Bump Correction. Follow the instructions on the screen to set the correction factors. You can also use this screen to reset the correction factors to zero. Once set, these corrections will be applied whenever you measure the orientation by placing your device on the outcrop and will remain active even when you change projects. An incorrectly applied correction (e.g., not following the instructions) can thoroughly mess up your measurements!! You'll see from the displayed pitch and roll angles that the corrections are typically small, but more accurate is always better! • IMPROVED -- Outline text has been made more legible by a slight increase in the spacing between letters. • FIXED -- A bug that prevented the reading of some newly saved newly saved contact type characteristics. Other bugs fixed as well.

v. 7.1.0 -- 11 May 2026 • NEW -- Subsampling and smoothing contacts are now undoable. Just give your device a shake within 2 minutes of applying the subsampling or smoothing, and the old contact will be restored. Subsampling now uses the Ramer-Douglas-Peucker (RDP) algorithm for better results. The degree of subsampling can now be set with a slider control. As you move the slider, the number of vertices to be deleted will appear above the slider. • NEW -- Additional database integrity checks are now in place. The checks are carried out every time you open a database. If corruption is found, the problematic rows are reported. • NEW -- If the app experiences a hard crash (with no error message), the next time you start up the app, it will warn you of an abnormal exit and will inform you that it is starting up without opening up the last database used (just in case). You’ll need to open the database by going to the settings screen and tapping Open Project. With the new database integrity check, if the DB causes the problem, you will be informed when you try to open it. If the problem is with the tiny resume file, that will be rewritten when you open the database. This way, the app will remain operable, and you can troubleshoot the problem more effectively rather than continuing to crash repeatedly with no message and no recourse. V.7.0.2 -- 13 April 2026 • NEW -- Correction for camera bump on the back of modern phones. Modern iPhones and iPads have bumps or plateaus on the back to accommodate more powerful cameras, and rugged cases can make the back of the phone even more irregular. This means the back is no longer flat, which can impact measuring of strikes and dips by placing the device on the bedding or fault surface. This version can correct for that non-planarity: Go to the Settings Screen (gear icon) and tap the new option "Correction for Camera bump." You will be taken to a new screen entitled Camera Bump Correction. Follow the instructions on the screen to set the correction factors. You can also use this screen to reset the correction factors to zero. Once set, these corrections will be applied whenever you measure the orientation by placing your device on the outcrop and will remain active even when you change projects. An incorrectly applied correction (e.g., not following the instructions) can thoroughly mess up your measurements!! You'll see from the displayed pitch and roll angles that the corrections are typically small, but more accurate is always better! • IMPROVED -- Outline text has been made more legible by a slight increase in the spacing between letters. • FIXED -- A bug that prevented the reading of some newly saved newly saved contact type characteristics. Other bugs fixed as well.

V.7.0.2 -- 13 April 2026 • NEW -- Correction for camera bump on the back of modern phones. Modern iPhones and iPads have bumps or plateaus on the back to accommodate more powerful cameras, and rugged cases can make the back of the phone even more irregular. This means the back is no longer flat, which can impact measuring of strikes and dips by placing the device on the bedding or fault surface. This version can correct for that non-planarity: Go to the Settings Screen (gear icon) and tap the new option "Correction for Camera bump." You will be taken to a new screen entitled Camera Bump Correction. Follow the instructions on the screen to set the correction factors. You can also use this screen to reset the correction factors to zero. Once set, these corrections will be applied whenever you measure the orientation by placing your device on the outcrop and will remain active even when you change projects. An incorrectly applied correction (e.g., not following the instructions) can thoroughly mess up your measurements!! You'll see from the displayed pitch and roll angles that the corrections are typically small, but more accurate is always better! • IMPROVED -- Outline text has been made more legible by a slight increase in the spacing between letters. • FIXED -- A bug that prevented the reading of some newly saved newly saved contact type characteristics. Other bugs fixed as well. V. 7.0.1 --24 March 2026 • FIXED -- A bug that would cause crashing immediately after install of v. 7.0.0 in some unusual circumstances. • FIXED -- A bug that would cause the map overlay transparency slider on the Map Screen to disappear when it was set to 100% transparency and the user temporarily left the Map Screen (e.g., when entering an orientation or POI. The slide will now be there when you go back to the Map Screen. v. 7.0.0 -- 21 March 2026 • NEW -- Calculate the slip magnitude on a fault given the orientation of the slip vector (from slickensides, mylonitic lineations, etc.) and any two points on a planar contact that has been offset by the fault. For the calculation to be accurate, it requires that the offset plane have the same orientation on either side of the fault. To do this calculation, first measure the lineation on the fault plane. Tap the lineation and then select "Displ. from Separation". You will then need to type in the orientation of the offset plane. Then tap on the contact on the map on one side of the fault, and then again on the same contact on the other side of the fault. As you tap and drag along the 2nd contact, the slip is displayed next to the pointer hotpoint. When you lift the pointer, the slip will be displayed in a message box and it will also be written to the notes field of the lineation on the fault plane. Interestingly enough, entering the strike and dip of the fault plane is not necessary for this calculation! Also, the intersection of the fault plane with the contact does not need to be exposed anywhere. NEW -- You can now specify the font size by observation type so, for example, the labels for fossil sample POIs can be a different size than formation type POIs, etc. The same is true for orientation and contact types. You set the font size by going to the Settings Screen (gear icon), tap Edit Data Types & Tags, select the POI, Orientation, or Contact type to Edit, then tap the Edit button and in the Edit Type screen, enter the Font Size. Following the same path, you can use the switch next to the Font Size label to toggle on or off whether labels are shown on the map for that type. Thus, you can opt to show contact names for stratigraphic type contacts but not for, say, access roads. FIXED -- A few more, mostly minor bugs were squashed.

V. 7.0.1 --24 March 2026 • FIXED -- A bug that would cause crashing immediately after install of v. 7.0.0 in some unusual circumstances. • FIXED -- A bug that would cause the map overlay transparency slider on the Map Screen to disappear when it was set to 100% transparency and the user temporarily left the Map Screen (e.g., when entering an orientation or POI. The slide will now be there when you go back to the Map Screen. v. 7.0.0 -- 21 March 2026 • NEW -- Calculate the slip magnitude on a fault given the orientation of the slip vector (from slickensides, mylonitic lineations, etc.) and any two points on a planar contact that has been offset by the fault. For the calculation to be accurate, it requires that the offset plane have the same orientation on either side of the fault. To do this calculation, first measure the lineation on the fault plane. Tap the lineation and then select "Displ. from Separation". You will then need to type in the orientation of the offset plane. Then tap on the contact on the map on one side of the fault, and then again on the same contact on the other side of the fault. As you tap and drag along the 2nd contact, the slip is displayed next to the pointer hotpoint. When you lift the pointer, the slip will be displayed in a message box and it will also be written to the notes field of the lineation on the fault plane. Interestingly enough, entering the strike and dip of the fault plane is not necessary for this calculation! Also, the intersection of the fault plane with the contact does not need to be exposed anywhere. NEW -- You can now specify the font size by observation type so, for example, the labels for fossil sample POIs can be a different size than formation type POIs, etc. The same is true for orientation and contact types. You set the font size by going to the Settings Screen (gear icon), tap Edit Data Types & Tags, select the POI, Orientation, or Contact type to Edit, then tap the Edit button and in the Edit Type screen, enter the Font Size. Following the same path, you can use the switch next to the Font Size label to toggle on or off whether labels are shown on the map for that type. Thus, you can opt to show contact names for stratigraphic type contacts but not for, say, access roads. FIXED -- A few more, mostly minor bugs were squashed. v. 6.9.6 -- 23 February 2026 • IMPROVED: This version is all about optimizations and making things speedier, including when tapping to select features on the map, drawing features on the map, using Show All in the data list screen, etc. It is unlikely that you will notice the difference if your project has just a few hundred features, but with large and complex projects, you will notice significant speed up. • IMPROVED: You can now hide a selected contact right from the map screen with the new Hide choice in the popup menu you get when you tap on a contact. • IMPROVED: Some annoying but non-critical behaviors in the base and overlay map manager screen. • FIXED: A change in how iOS 26 works caused it to be impossible to pan a photo by tapping and dragging it to the right in the Photo Details Screen. This has now been fixed. Also, panning photos has been made much smoother and less frustrating than in previous versions.

v. 7.0.0 -- 21 March 2026 • NEW -- Calculate the slip magnitude on a fault given the orientation of the slip vector (from slickensides, mylonitic lineations, etc.) and any two points on a planar contact that has been offset by the fault. For the calculation to be accurate, it requires that the offset plane have the same orientation on either side of the fault. To do this calculation, first measure the lineation on the fault plane. Tap the lineation and then select "Displ. from Separation". You will then need to type in the orientation of the offset plane. Then tap on the contact on the map on one side of the fault, and then again on the same contact on the other side of the fault. As you tap and drag along the 2nd contact, the slip is displayed next to the pointer hotpoint. When you lift the pointer, the slip will be displayed in a message box and it will also be written to the notes field of the lineation on the fault plane. Interestingly enough, entering the strike and dip of the fault plane is not necessary for this calculation! Also, the intersection of the fault plane with the contact does not need to be exposed anywhere. NEW -- You can now specify the font size by observation type so, for example, the labels for fossil sample POIs can be a different size than formation type POIs, etc. The same is true for orientation and contact types. You set the font size by going to the Settings Screen (gear icon), tap Edit Data Types & Tags, select the POI, Orientation, or Contact type to Edit, then tap the Edit button and in the Edit Type screen, enter the Font Size. Following the same path, you can use the switch next to the Font Size label to toggle on or off whether labels are shown on the map for that type. Thus, you can opt to show contact names for stratigraphic type contacts but not for, say, access roads. FIXED -- A few more, mostly minor bugs were squashed. v. 6.9.6 -- 23 February 2026 • IMPROVED: This version is all about optimizations and making things speedier, including when tapping to select features on the map, drawing features on the map, using Show All in the data list screen, etc. It is unlikely that you will notice the difference if your project has just a few hundred features, but with large and complex projects, you will notice significant speed up. • IMPROVED: You can now hide a selected contact right from the map screen with the new Hide choice in the popup menu you get when you tap on a contact. • IMPROVED: Some annoying but non-critical behaviors in the base and overlay map manager screen. • FIXED: A change in how iOS 26 works caused it to be impossible to pan a photo by tapping and dragging it to the right in the Photo Details Screen. This has now been fixed. Also, panning photos has been made much smoother and less frustrating than in previous versions.

v. 6.9.6 -- 23 February 2026 • IMPROVED: This version is all about optimizations and making things speedier, including when tapping to select features on the map, drawing features on the map, using Show All in the data list screen, etc. It is unlikely that you will notice the difference if your project has just a few hundred features, but with large and complex projects, you will notice significant speed up. • IMPROVED: You can now hide a selected contact right from the map screen with the new Hide choice in the popup menu you get when you tap on a contact. • IMPROVED: Some annoying but non-critical behaviors in the base and overlay map manager screen. • FIXED: A change in how iOS 26 works caused it to be impossible to pan a photo by tapping and dragging it to the right in the Photo Details Screen. This has now been fixed. Also, panning photos has been made much smoother and less frustrating than in previous versions.

v. 6.9.5 -- 19 February 2026 • Label your contacts with text on the contact path. • You can now select to display text on the map screen either with a translucent rectangle behind it (as in previous versions) or using outline text for a less cluttered look • The Settings screen has been reorganized. All of the options to show or hide data types, as well as setting their scale is now done by tapping "Data to Show on Map" which is found in the projects section. This will show a new screen where you can toggle on or off POIs, Orientations, and Contacts as well as two new display options: "Labels Use Outline Text" and "Contact Names on Path". These are both saved in your project database. • A bug related to symbol scaling has been fixed along with another rare crashing bug.

v. 6.9.0 -- 13 September 2025 • NEW: You can now attach up to four photos or sketches to any point of interest. The first one can be added directly from the map screen whereas the other three can be added from the toolbar of the POI details screen. The project database will be updated automatically to accommodate the additional photos/sketches. When you send a POI by email, all of the photos will attached to the email. • FIXED: Changing the prediction distance for contacts was broken in the previous version. This has now been fixed.

v. 6.8.1 & 6.8.2 -- 10, 17 March 2025 • NEW -- now uses the iOS color picker in the Edit Symbols and Contacts screen, rather than the three custom sliders in previous versions. • IMPROVED -- Key board in the Type and Tag picker screen now has a done button to dismiss it. • FIXED -- v. 6.8.2 fixes a bug where tags were not being imported properly. v. 6.8.0 -- 7 March 2025 • Contact smoothing -- You may have noticed that if you set the contact sample interval for a small number (say, 2 m) and you drew a contact while zoomed out (e.g., zoom level 13), the resulting contacts were very jagged. This happens because the pixel size (in meters) is large compared to the sample interval. v. 6.8 adds both automatic and manual contact smoothing. Automatic smoothing is turned on by default, but you can turn it off in the Track sample interval section of the Settings Screen. Auto-smoothing is applied to both drawn paths and to GPS tracks that you collect. • You can choose to manually smooth any contact by tapping the new Smooth button on the toolbar of the Contact Details Screen. Note that contact smoothing, either manual or automatic, will shorten the reported length of the contact. Smoothing functions by running the contact polygon through a 3 or 5-vertex running average filter. The number of vertices used depends on the average spacing between vertices and is not user-controllable. • The sample interval for tracks and drawn paths is now displayed in the section title in Settings, with the max and min of the slider range displayed below. • Updated users manual.

v. 6.8.1 -- 10 March 2025 • NEW -- now uses the iOS color picker in the Edit Symbols and Contacts screen, rather than the three custom sliders in previous versions. • IMPROVED -- Key board in the Type and Tag picker screen now has a done button to dismiss it. v. 6.8.0 -- 7 March 2025 • Contact smoothing -- You may have noticed that if you set the contact sample interval for a small number (say, 2 m) and you drew a contact while zoomed out (e.g., zoom level 13), the resulting contacts were very jagged. This happens because the pixel size (in meters) is large compared to the sample interval. v. 6.8 adds both automatic and manual contact smoothing. Automatic smoothing is turned on by default, but you can turn it off in the Track sample interval section of the Settings Screen. Auto-smoothing is applied to both drawn paths and to GPS tracks that you collect. • You can choose to manually smooth any contact by tapping the new Smooth button on the toolbar of the Contact Details Screen. Note that contact smoothing, either manual or automatic, will shorten the reported length of the contact. Smoothing functions by running the contact polygon through a 3 or 5-vertex running average filter. The number of vertices used depends on the average spacing between vertices and is not user-controllable. • The sample interval for tracks and drawn paths is now displayed in the section title in Settings, with the max and min of the slider range displayed below. • Updated users manual.

v. 6.8.0 -- 7 March 2025 • Contact smoothing -- You may have noticed that if you set the contact sample interval for a small number (say, 2 m) and you drew a contact while zoomed out (e.g., zoom level 13), the resulting contacts were very jagged. This happens because the pixel size (in meters) is large compared to the sample interval. v. 6.8 adds both automatic and manual contact smoothing. Automatic smoothing is turned on by default, but you can turn it off in the Track sample interval section of the Settings Screen. Auto-smoothing is applied to both drawn paths and to GPS tracks that you collect. • You can choose to manually smooth any contact by tapping the new Smooth button on the toolbar of the Contact Details Screen. Note that contact smoothing, either manual or automatic, will shorten the reported length of the contact. Smoothing functions by running the contact polygon through a 3 or 5-vertex running average filter. The number of vertices used depends on the average spacing between vertices and is not user-controllable. • The sample interval for tracks and drawn paths is now displayed in the section title in Settings, with the max and min of the slider range displayed below. • Updated users manual.

v. 6.7.0, 6.7.1 -- 18 January 2025 • NEW: Overlay Maps. If your project has more than one MBTiles map in the project folder, you can identify one map as the base map and the second as a semitransparent overlay. A slide on the main screen controls the degree of transparency from 0 1o 100%. This is a great way to switch seamlessly back and forth between, say, a geologic map and a shaded relief map, or between topo and satellite imagery. The base and overlay manager is accessed by tapping the map icon on the right hand side of the toolbar. • NEW: Set font size for POIs and orientations on a type by type basis. You can change the font sizes by going to Settiings>Edit Data Types & Tags selecting the POI or Orientation type and Tapping the Edit button. In the Edit Type Screen, type in the font size that you want. • NEW: A link to my GMDE sample downloads page. Once there you can download any of the sample projects, then return to GMDE Lite, go to the Settings Screen and choose Open Project. Select the zip archive that you just downloaded (look first under Recents and/or Downloads) and GMDE LIte will do the rest. Most of the sample projects have a DEM and two or more MBTiles base maps so you can try the cool overlays feature. • FIXED: v. 6.7.1 fixes a bug where the transparency slide for overlay maps was remained on the screen even when switching to a project that did not have an overlay map.

v. 6.7.0 -- 7 January 2025 • NEW: Overlay Maps. If your project has more than one MBTiles map in the project folder, you can identify one map as the base map and the second as a semitransparent overlay. A slide on the main screen controls the degree of transparency from 0 1o 100%. This is a great way to switch seamlessly back and forth between, say, a geologic map and a shaded relief map, or between topo and satellite imagery. The base and overlay manager is accessed by tapping the map icon on the right hand side of the toolbar. • NEW: Set font size for POIs and orientations on a type by type basis. You can change the font sizes by going to Settiings>Edit Data Types & Tags selecting the POI or Orientation type and Tapping the Edit button. In the Edit Type Screen, type in the font size that you want. • NEW: A link to my GMDE sample downloads page. Once there you can download any of the sample projects, then return to GMDE Lite, go to the Settings Screen and choose Open Project. Select the zip archive that you just downloaded (look first under Recents and/or Downloads) and GMDE LIte will do the rest. Most of the sample projects have a DEM and two or more MBTiles base maps so you can try the cool overlays feature.

v. 6.6.5 -- 3 January 2025 IMPROVED -- GMDE Lite now saves the photos that you have taken in the app to your Photos Library (if you have granted permission to do so) with location EXIF data embedded. FIXED -- A rare bug that would cause recorded GPS tracks not to be saved after you had collected them in under some uncommon conditions. v. 6.6.4 -- 31 October 2024 NEW -- In the Stereonet Screen, you can now color by type, by tag, or show all with a single highly visible color IMPROVED -- The New/Modify project screen interface has be updated IMPROVED -- The export entire project as a .zip file now give you the option of whether or not to include the user collected data. You might just want to export the map(s) and DEM(s) if, for example, you were sending the project to a student's device and you wanted them to collect their own data. FIXED -- A number of bugs in the POI Details screen that were introduced in a recent version have been fixed. v. 6.6.3 -- 17 October 2024 NEW -- Overlapping POI labels at a particular zoom level are suppressed resulting in a (somewhat) cleaner look when you have a lot of labels in a small space. You can still tap on a POI that has a suppressed label and get its details, etc. CHANGED -- Tag types that are hidden will not be hidden regardless of whether you have color by type or by tag selected in Settings. Previously, they would only be hidden if you had Color by Tag selected. FIXED -- Two finger scrolling of the map while in creating a new Path from Existing Segments now works. It was broken before. V. 6.6.2 -- 19 September 2024 • Navigate to -- Tap any point on the map and get driving (or walking) directions to that point, from your current location or from a starting point that you tap, in Apple Maps. Once you arrive, you can easily switch back to GMDE Lite to start mapping. • Rock units have been renamed "Tags" reflecting the fact that you can use them for stuff other than rock units (e.g., you could assign a locality tag to every contact, orientation, and POI in a particular area). The most recently selected Tag is applied automatically to all subsequent observations so, for example, if you are making a number of observations in the Twin Creek Formation or at field station 5, you only have to select the tag for the first observation. Note that tags differ from "types" because types are defined for a particular observation -- "cleavage" can only be applied to orientations, not contacts or POIs -- whereas taps can be applied to any type of observation. Thus, for instance, you can have cleavage measured at different localities and at a single locality you can have a cleavage measurements, and intrusive contact, and several photo POIs. v. 6.6.1 -- 2 September 2024 • FIXED: a bug in the previous version that would prevent the saving of points of interest (POIs) with attached photos to the database. All users should update to this version. v. 6.6.0 --29 August 2024 • NEW: You can now assign a rock unit to any POI, Orientation, or Contact. Rock units can be set up in Settings>Edit Types and Rock Units or you can define them on the fly when you tap the Set Types button in the upper right toolbar. Your data on the map can now be plotted using either type color OR the rock unit color. You set this preference in the Settings Screen. Rock units are specific to individual projects. To make sure that your team/students etc. use the same types and units, set up a blank project at the start of your field campaign and then share it with all users. • NEW: Display planes using the Dip Azimuth and Dip format. This make this choice in the Settings Screen. • IMPROVED: Piercing points can now be set by selecting either a planar or a linear orientation (previously they only worked, correctly, if you chose a strike and dip). If you select an linear orientation, then you will need to tap and drag to locate the plane to be pierced.

v. 6.6.4 -- 31 October 2024 NEW -- In the Stereonet Screen, you can now color by type, by tag, or show all with a single highly visible color IMPROVED -- The New/Modify project screen interface has be updated IMPROVED -- The export entire project as a .zip file now give you the option of whether or not to include the user collected data. You might just want to export the map(s) and DEM(s) if, for example, you were sending the project to a student's device and you wanted them to collect their own data. FIXED -- A number of bugs in the POI Details screen that were introduced in a recent version have been fixed. v. 6.6.3 -- 17 October 2024 NEW -- Overlapping POI labels at a particular zoom level are suppressed resulting in a (somewhat) cleaner look when you have a lot of labels in a small space. You can still tap on a POI that has a suppressed label and get its details, etc. CHANGED -- Tag types that are hidden will not be hidden regardless of whether you have color by type or by tag selected in Settings. Previously, they would only be hidden if you had Color by Tag selected. FIXED -- Two finger scrolling of the map while in creating a new Path from Existing Segments now works. It was broken before. V. 6.6.2 -- 19 September 2024 • Navigate to -- Tap any point on the map and get driving (or walking) directions to that point, from your current location or from a starting point that you tap, in Apple Maps. Once you arrive, you can easily switch back to GMDE Lite to start mapping. • Rock units have been renamed "Tags" reflecting the fact that you can use them for stuff other than rock units (e.g., you could assign a locality tag to every contact, orientation, and POI in a particular area). The most recently selected Tag is applied automatically to all subsequent observations so, for example, if you are making a number of observations in the Twin Creek Formation or at field station 5, you only have to select the tag for the first observation. Note that tags differ from "types" because types are defined for a particular observation -- "cleavage" can only be applied to orientations, not contacts or POIs -- whereas taps can be applied to any type of observation. Thus, for instance, you can have cleavage measured at different localities and at a single locality you can have a cleavage measurements, and intrusive contact, and several photo POIs. v. 6.6.1 -- 2 September 2024 • FIXED: a bug in the previous version that would prevent the saving of points of interest (POIs) with attached photos to the database. All users should update to this version. v. 6.6.0 --29 August 2024 • NEW: You can now assign a rock unit to any POI, Orientation, or Contact. Rock units can be set up in Settings>Edit Types and Rock Units or you can define them on the fly when you tap the Set Types button in the upper right toolbar. Your data on the map can now be plotted using either type color OR the rock unit color. You set this preference in the Settings Screen. Rock units are specific to individual projects. To make sure that your team/students etc. use the same types and units, set up a blank project at the start of your field campaign and then share it with all users. • NEW: Display planes using the Dip Azimuth and Dip format. This make this choice in the Settings Screen. • NEW: Redesigned set type (and rock unit) and edit type (and rock unit) screens. • IMPROVED: Piercing points can now be set by selecting either a planar or a linear orientation (previously they only worked, correctly, if you chose a strike and dip). If you select an linear orientation, then you will need to tap and drag to locate the plane to be pierced. • FIXED: More bugs....

v. 6.6.3 -- 17 October 2024 NEW -- Overlapping POI labels at a particular zoom level are suppressed resulting in a (somewhat) cleaner look when you have a lot of labels in a small space. You can still tap on a POI that has a suppressed label and get its details, etc. CHANGED -- Tag types that are hidden will not be hidden regardless of whether you have color by type or by tag selected in Settings. Previously, they would only be hidden if you had Color by Tag selected. FIXED -- Two finger scrolling of the map while in creating a new Path from Existing Segments now works. It was broken before. V. 6.6.2 -- 19 September 2024 • Navigate to -- Tap any point on the map and get driving (or walking) directions to that point, from your current location or from a starting point that you tap, in Apple Maps. Once you arrive, you can easily switch back to GMDE Lite to start mapping. • Rock units have been renamed "Tags" reflecting the fact that you can use them for stuff other than rock units (e.g., you could assign a locality tag to every contact, orientation, and POI in a particular area). The most recently selected Tag is applied automatically to all subsequent observations so, for example, if you are making a number of observations in the Twin Creek Formation or at field station 5, you only have to select the tag for the first observation. Note that tags differ from "types" because types are defined for a particular observation -- "cleavage" can only be applied to orientations, not contacts or POIs -- whereas taps can be applied to any type of observation. Thus, for instance, you can have cleavage measured at different localities and at a single locality you can have a cleavage measurements, and intrusive contact, and several photo POIs. v. 6.6.1 -- 2 September 2024 • FIXED: a bug in the previous version that would prevent the saving of points of interest (POIs) with attached photos to the database. All users should update to this version. v. 6.6.0 --29 August 2024 • NEW: You can now assign a rock unit to any POI, Orientation, or Contact. Rock units can be set up in Settings>Edit Types and Rock Units or you can define them on the fly when you tap the Set Types button in the upper right toolbar. Your data on the map can now be plotted using either type color OR the rock unit color. You set this preference in the Settings Screen. Rock units are specific to individual projects. To make sure that your team/students etc. use the same types and units, set up a blank project at the start of your field campaign and then share it with all users. • NEW: Display planes using the Dip Azimuth and Dip format. This make this choice in the Settings Screen. • NEW: Redesigned set type (and rock unit) and edit type (and rock unit) screens. • IMPROVED: Piercing points can now be set by selecting either a planar or a linear orientation (previously they only worked, correctly, if you chose a strike and dip). If you select an linear orientation, then you will need to tap and drag to locate the plane to be pierced. • FIXED: More bugs....

V. 6.6.2 -- 19 September 2024 • Navigate to -- Tap any point on the map and get driving (or walking) directions to that point, from your current location or from a starting point that you tap, in Apple Maps. Once you arrive, you can easily switch back to GMDE Lite to start mapping. • Rock units have been renamed "Tags" reflecting the fact that you can use them for stuff other than rock units (e.g., you could assign a locality tag to every contact, orientation, and POI in a particular area). The most recently selected Tag is applied automatically to all subsequent observations so, for example, if you are making a number of observations in the Twin Creek Formation or at field station 5, you only have to select the tag for the first observation. Note that tags differ from "types" because types are defined for a particular observation -- "cleavage" can only be applied to orientations, not contacts or POIs -- whereas taps can be applied to any type of observation. Thus, for instance, you can have cleavage measured at different localities and at a single locality you can have a cleavage measurements, and intrusive contact, and several photo POIs. v. 6.6.1 -- 2 September 2024 • FIXED: a bug in the previous version that would prevent the saving of points of interest (POIs) with attached photos to the database. All users should update to this version. v. 6.6.0 --29 August 2024 • NEW: You can now assign a rock unit to any POI, Orientation, or Contact. Rock units can be set up in Settings>Edit Types and Rock Units or you can define them on the fly when you tap the Set Types button in the upper right toolbar. Your data on the map can now be plotted using either type color OR the rock unit color. You set this preference in the Settings Screen. Rock units are specific to individual projects. To make sure that your team/students etc. use the same types and units, set up a blank project at the start of your field campaign and then share it with all users. • NEW: Display planes using the Dip Azimuth and Dip format. This make this choice in the Settings Screen. • NEW: Redesigned set type (and rock unit) and edit type (and rock unit) screens. • IMPROVED: Piercing points can now be set by selecting either a planar or a linear orientation (previously they only worked, correctly, if you chose a strike and dip). If you select an linear orientation, then you will need to tap and drag to locate the plane to be pierced. • FIXED: More bugs....

v. 6.6.1 -- 2 September 2024 • FIXED: a bug in the previous version that would prevent the saving of points of interest (POIs) with attached photos to the database. All users should update to this version. v. 6.6.0 --29 August 2024 • NEW: You can now assign a rock unit to any POI, Orientation, or Contact. Rock units can be set up in Settings>Edit Types and Rock Units or you can define them on the fly when you tap the Set Types button in the upper right toolbar. Your data on the map can now be plotted using either type color OR the rock unit color. You set this preference in the Settings Screen. Rock units are specific to individual projects. To make sure that your team/students etc. use the same types and units, set up a blank project at the start of your field campaign and then share it with all users. • NEW: Display planes using the Dip Azimuth and Dip format. This make this choice in the Settings Screen. • NEW: Redesigned set type (and rock unit) and edit type (and rock unit) screens. • IMPROVED: Piercing points can now be set by selecting either a planar or a linear orientation (previously they only worked, correctly, if you chose a strike and dip). If you select an linear orientation, then you will need to tap and drag to locate the plane to be pierced. • FIXED: More bugs....

v. 6.6.0 --29 August 2024 • NEW: You can now assign a rock unit to any POI, Orientation, or Contact. Rock units can be set up in Settings>Edit Types and Rock Units or you can define them on the fly when you tap the Set Types button in the upper right toolbar. Your data on the map can now be plotted using either type color OR the rock unit color. You set this preference in the Settings Screen. Rock units are specific to individual projects. To make sure that your team/students etc. use the same types and units, set up a blank project at the start of your field campaign and then share it with all users. • NEW: Display planes using the Dip Azimuth and Dip format. This make this choice in the Settings Screen. • NEW: Redesigned set type (and rock unit) and edit type (and rock unit) screens. • IMPROVED: Piercing points can now be set by selecting either a planar or a linear orientation (previously they only worked, correctly, if you chose a strike and dip). If you select an linear orientation, then you will need to tap and drag to locate the plane to be pierced. • FIXED: More bugs....

v. 6.5.1 -- 16 August 2024 • Fix for a bug that could cause a crash while entering text in the details screens. v. 6.5.0 --22 July 2024 • NEW: You can now doing piercing point problems! Select an orientation on the plane of interest and choose piercing pt. Then enter the trend and plunge of the line that pierces the plane and tap and drag on the screen to set the position of the line on the surface. As you drag, the distance from the line to the plane along the trend and plunge and the surface projection of the piercing point is shown interactively. Once you lift the pointer, you'll be given the option to save and plot the line and the piercing point. • NEW: Make a new path out of segments of existing paths/contacts. • NEW: Export the entire project as a compressed, .zip archive. This makes it especially easy to move an entire project -- MBTiles basemaps, DEM(s), and any existing observations -- between devices. • IMPROVED: The handling of segments of topo profiles with no data (e.g., at the edge of a DEM) has been improved. • UPDATED: The users manual has been updated to v. 6.5 of the app, covering the new functionality, as well as a section on using QGIS to create and save MBTiles files. • FIXED: various nagging bugs.

v. 6.5.0 --22 July 2024 • NEW: You can now doing piercing point problems! Select an orientation on the plane of interest and choose piercing pt. Then enter the trend and plunge of the line that pierces the plane and tap and drag on the screen to set the position of the line on the surface. As you drag, the distance from the line to the plane along the trend and plunge and the surface projection of the piercing point is shown interactively. Once you lift the pointer, you'll be given the option to save and plot the line and the piercing point. • NEW: Make a new path out of segments of existing paths/contacts. • NEW: Export the entire project as a compressed, .zip archive. This makes it especially easy to move an entire project -- MBTiles basemaps, DEM(s), and any existing observations -- between devices. • IMPROVED: The handling of segments of topo profiles with no data (e.g., at the edge of a DEM) has been improved. • UPDATED: The users manual has been updated to v. 6.5 of the app, covering the new functionality, as well as a section on using QGIS to create and save MBTiles files. • FIXED: various nagging bugs.

v. 6.0.2 -- 12 March 2024 • A location uncertainty circle is now displayed around the users location when GPS is turned on. If you do not see a circle, that is because your location is more accurate than the size of the location indicator dot on the screen at your chosen zoom level. • Fixed a subtle cosmetic bug in the calculation of appropriate colors.

v. 6.0.1 --5 February 2024 • Background GPS track collection -- GMDE Lite can now record GPS tracks in the background when the screen is off or the user switches to another app. The GPS track is limited to a duration of 8 hours in case you forget to stop collecting the track. You must give GMDE Lite permission to access your location always, even in the background in order for background tracking to work. Note that your location is never sent to the programmer and, as long as you use an MBTile base map and have an onboard DEM, your location never leaves your device. If you are displaying a satellite image, your location is sent to Apple to retrieve the appropriate images.

v. 6.0.0 -- 14 December 2023 • Photo thumbnails -- When you tap on a point of interest (POI) which contains a photo, regardless of whether it is a "Photograph" type POI, a thumbnail of the photo will be displayed at the top of the resulting message box. If you tap the photo itself, you will be taken directly to the Photo Screen where you can enlarge or annotate the photo. The remaining buttons in the message box (Show Details, Move, Delete, Cancel) behave exactly as they do in any other POI type. • Auto open DEM with base map selected in the Map Screen -- When you select a base map from the base map selector button on the toolbar in the Map Screen, if there is a DEM with the same root name as the selected base map, the DEM will be opened automatically. This is particularly useful if, for example, you have a regional base map with lower resolution DEM and, embedded in the bigger map, a high resolution base map with, say, a LiDAR DEM of a small area. Selecting the high resolution base map will automatically select the LiDAR DEM, too. You can still select base map and DEM independently in the Modify Project Screen (available from the Settings Screen). • Add, yes, a few additional bugs have been quashed.

v. 5.5.7 -- 23 Nov 2023 • Additional error checking for damaged databases and bug fixes. v. 5.5.6 -- 15 Nov 2023 • Rapidly change the base map. If you are like me, you have several different base maps that you use with a single project, maybe a topo map and a a geologic map, etc. The app now scans the project folder and list all available MBTiles files in a box that appears when you tap the map icon in the lower rightmost part of the toolbar. The online satellite map is also listed, and can be chosen, here. Just tap the map that you want to use and it will be loaded automatically. No need to go to the modify project screen any more! • Support for opening and reading ZIP archives created by the desktop version of GMDE which contain all of the elements of a project -- mbtiles base map(s), three files needed for the DEM, and a project SQLITE database. Once you have created such a zip file on the desktop, save it to iCloud Drive or send it directly to your phone via AirDrop or Finder file sharing. Then, in GMDE Lite, select "Open Project" from the Setting Screen, find and tap on the ZIP archive, and the app will create a new project folder in the GMDE Lite Documents Folder and will automatically launch the new project along with any data created on the desktop. This is the easiest way to load a project into GMDE Lite! (The ability to save these zip archives will be available in the next version of GMDE Desktop on all platforms.) • Take a photo right from the map screen. Now, when you tap the add POI button on the Map Screen toolbar, one option will be "Take Photo". If you select that option, the camera will immediately appear. Once you take and select Use Photo, the new POI screen will appear with the photo already embedded and displayed at the bottom of the screen. Photos taken in this way can only be located at the current location. • The data List screen now remembers whether you were displaying POIs, orientations, or contacts and will return to that panel after, say, displaying a stereonet or contact details. • Fixed a bug that would distort photos taken in Portrait orientation. • Fix for a very occasional crashing bug when entering text in a Details screen • Additional bug fixes.