Introducing frame and building benchmark examples and extensive improvements throughout the app! • NEW: Examples gallery in the home screen, including new examples for frames and buildings. Click on the button with a book icon to open it. • NEW: The new eyedropper button in the frame editor allows you to copy the material and cross-section from one beam to another. To use it, select a beam, press the eyedropper button, and then select another beam to copy from. • FIXED: Cross section stress analysis for angles and zees is now performed along their principal axes rather than geometric axes. • IMPROVED: Numerous performance, stability, layout, and interaction enhancements in the 2D editor, especially when working with large models. Thank you for your continued support and feedback! Reach us at contact@ketchep.com with any questions or comments.

• NEW: Shear, moment, and axial force diagrams can now be displayed for 2D frames and trusses. Use the buttons at the bottom of the screen to display or hide the diagrams. • IMPROVED: On iPad, the side panel in the 2D editor can now be collapsed to make better use of screen space. • FIXED: Minor issues.

Minor fixes

• NEW: 2D frame and truss editor. • NEW: Added Mexican cross section data. • NEW: In the classic beam editor, you can now rotate the beam and the forces applied to it. • IMPROVED: Performance while dragging loads. • IMPROVED: Formatting of exported report (via share link). • FIXED: Minor issues and improvements across the app.

• IMPROVED: Vastly improved translations for all languages. • IMPROVED: Screen color contrast and addressed minor issues throughout the app.

• IMPROVED: Faster app loading time • NEW: Pressure units in kg/cm2 • NEW: Add a description to your design file. • FIXED: Minor issues and improvements across the app.

• NEW: South Africa steel shapes. Select the "ZA" database to enable. • FIXED: For some European steel shapes, the "depth between fillets" was previously being incorrectly labeled as "detailing depth".

• IMPROVED: App responsiveness and stability • FIXED: Fixed vertical shear stress profile of circular tube shapes. • FIXED: Minor issues across the app.

• NEW: Dark mode! The app will use your phone settings for light and dark mode. • FIXED: Minor issues across the app.

• NEW: Load list editor for iPhones. You can now edit loads in phones using the load list panel in addition to the graphical editor, as you can already do in iPad. • NEW: Change constraint type without having to remove it and add a new one. Simply select a constraint, and the constraint type buttons will appear above it in the graphical editor. • NEW: Copy and delete loads using the dropdown menu in the top right of each load card in the load list panel. • IMPROVED: Press the new "Add" (+) button to add loads on phones. This new design allows you to scroll up and down without accidentally dragging the load icons. • IMPROVED: Better screen layout and minor fixes and improvements across the app.

• USER REQUESTED: Configure the number of significant figures used to display values. This does not affect inputs or internal calculations. • USER REQUESTED: Configure whether large values should be displayed using scientific or engineering notation. • USER REQUESTED: Different engineers have different needs, so you can now configure the direction of moment diagrams to match your convention and industry. • NEW: Add a title to your design document using the new text box on top of the design area. • IMPROVED: Bending stress visualizations have been revamped to display both max tension and compression components intuitively. • IMPROVED: Diagram labels are a little smarter and have a better layout. When selecting a discontinuous point, both sides of it will now be labeled. • IMPROVED: Interaction with distributed loads should feel better now, and the app won't crash if you enter an absurdly large length for it. • FIXED: Minor fixes in vertical cross section diagrams. • CHANGED: Use the settings button in the home screen to modify app default settings. These settings will apply to any new designs as well as the cross section and material libraries. Configuring options (units, significant figures, notation, etc.) within a design will now only apply to that design document.

• FIXED: Scaling issues in the vertical cross section diagrams and other minor fixes.

• NEW: Spring supports! Simply drag and drop a spring like any other support and then configure its spring constant directly on the beam editor or using the loads and supports panel. • NEW: Interactive vertical diagrams to inspect internal shear and bending stresses along the entire beam (x axis) and cross section vertical axis (y axis). • IMPROVED: Precise dragging of loads and supports should feel easier now that we improved the algorithm we use to snap them in place. • IMPROVED: New workflow to create custom sections. Instead of having to find a cross section in the library to customize, you can now edit a template for all supported shapes by using a new menu. Click on the button with a pencil and ruler icon in the cross section selection panel to do so. • NEW: Database for Chinese shapes • IMPROVED: Updated US data, including new shapes, designations, and some new properties such as workable gage.

• NEW: On iPad, besides editing loads and supports directly in the graphical editor, you can now use a new panel in the right-side toolbar. The new panel displays information in an easier-to-read tabular form. • IMPROVED: Addressed several minor UI issues.

• NEW: Undo and redo! Use the new buttons in the top toolbar to undo and redo your changes. • NEW: New editor layout for a more streamlined experience on iPad. • IMPROVED: Better app stability and lots of minor issue fixes.

• NEW: Copy and delete beam design files. Go to the home screen list view, and then use the ellipsis button in the top-right of each card to expand a menu to copy or delete the file. • NEW: Configure units for cross section dimensions separately from other length measurements. Go to the Settings view and specify the default units for "Dimensions".

• IMPROVED: Better layout of beam design area to reduce overlap of labels with icons. • FIXED: Minor issues. We want to hear from you! Issues, questions, or requests? Please submit a review or email contact@ketchep.com

A good portion of the fixes and improvements in this release were made in response to user feedback. Thank you for your continued support and comments! • FIXED: When exporting a design file using a link, your unit preferences will now be included with it. When you view the design file in a browser, all results and diagrams will match your app settings. • IMPROVED: Better layout of labels to improve legibility. You may also notice a more relaxed, natural pastel color theme. • FIXED: Fixed several interaction glitches throughout the app. We want to hear from you! Issues, questions, or requests? Please submit a review or email contact@ketchep.com

In this release we focused on reducing and improving handling of numerical error by using better numerical solver algorithms, but we also made other meaningful improvements and fixes throughout the app. • IMPROVED: Output values close to zero will contain less numerical noise, and the app will be able to correctly solve problems with a wider range of numerical magnitudes. For example, when a support is placed extremely close of the edge of the beam relative to the total length of the beam, the internal equation matrix becomes harder to solve numerically, but now the app can solve more of these cases. • NEW: The app will display an error message about numerical stability when numerical error prevents the app from finding a solution. If a solution was still found, but it does not pass sanity checks, a warning about stability and the failed check will also be displayed along with the unstable solution to help diagnose the problem. • IMPROVED: We improved the usability of the sort buttons in the cross section library by adding an explicit button to sort by section name. • IMPROVED: Added missing translations for some languages. Please let us know if you find anything that was not translated correctly. • FIXED: Addressed many small user interface bugs througout the app. We want to hear from you! Issues, questions, or requests? Please submit a review or email contact@ketchep.com

• NEW: Customize how cross sections in the library are sorted. Tap on the column headers to sort by cross section width, height, area, or moment of inertia (about strong axis). • NEW: Choose to display either cross sectional area or moment of inertia (strong axis) in the cross section library. Tap on the drop down button on the right of the screen to configure which of these columns to use. • NEW: Added some data for Japanese, Russian, and Indian steel cross sections. • IMPROVED: Enabled additional properties for GB and CA cross sections. • IMPROVED: Better search functionality. Now you can search by database (eg, "US", "EU", etc) or by material (eg, "steel", "lumber", or "aluminum") as well as by section designations (including alternative names). • IMPROVED: Added translations of cross section property descriptions for many languages. • FIXED: Minor rendering issues in iOS 13. We want to hear from you! Issues, questions, or requests? Please submit a review or email contact@ketchep.com

You can now export your work to print it and share it with others! This release is a big milestone for us, and it is the first step towards a more unified platform that will allow you to collaborate better with others. • NEW: Tap on the new External Link button (right next to the Settings icon) in the top-right corner of the design view to export and generate a link that you can share with others! You can also open the link directly in Safari, where you can print or save the document as a PDF. When you open the link in a browser, it opens up an interactive website that behaves similarly to the mobile app: You can tap on loads to select them and get more details, and you can also tap on the diagrams to obtain specific values. We want to hear from you! Issues, questions, or requests? Please submit a review or email contact@ketchep.com

• IMPROVED: When the beam is resized, if any existing loads or supports are trimmed off the new beam length, instead of being automatically repositioned at the end of the beam, the app will remember their positions if the beam length is increased again. These loads and supports will be drawn in red in the right margin of the screen to indicate that their position is not valid and that they are excluded from all calculations. When that happens, you can either increase the beam length again or drag them somewhere else. • CHANGED: Previously, as you edited the height of the cross section, the beam length would automatically be adjusted to be several times the height. This would lead to undesirable and confusing behavior. With this update, the beam length will no longer be automatically adjusted. However, next time you try to edit the beam length, the app may require you to use a minimum length based on the height of the cross section. We want to hear from you! Issues, questions, or requests? Please submit a review or email contact@ketchep.com

• FIXED: Values in the cross section preview diagram are again displayed using the preferred user units. • FIXED: The preferred user units will also be used by the section editor for dimensions that were obtained from the built-in library. We want to hear from you! Issues, questions, or requests? Please submit a review or email contact@ketchep.com

• NEW: Added some data for Australian cross sections. • IMPROVED: The app now remembers your search query after you close and reload the app. • IMPROVED: Since the app now contains datasets for multiple countries and materials, we added more explicit labels to reflect this information clearly. We want to hear from you! Issues, questions, or requests? Please submit a review or email contact@ketchep.com

• IMPROVED: Performance and responsiveness throughout app We want to hear from you! Issues, questions, or requests? Please submit a review or email contact@ketchep.com