Theodolite is a multi-function viewfinder that combines a compass, two-axis inclinometer, rangefinder, GPS, map, nav calculator, and geo-overlay photo/movie camera into one indispensable app. Theodolite was one of the very first augmented reality (AR) apps when it was released in 2009, and it’s been downloaded and used by millions of customers since then. Uses are endless, and the app is great for land measurements, outdoor sports, sightseeing, navigation, and finding your way around. Theodolite is a pro grade app and is used extensively by surveyors, geologists, architects, engineers, competitive sportsmen, first responders, military personnel, and search and rescue workers around the world.
Theodolite lets you take data-overlay camera images and movies with 2X-8X digital zoom and fast image processing. Overlay geographical data, date, time, author/company info, and project notes directly on photos and movies for later reference. The same data is written into the metadata record of images, making image files self-contained data records. Third-party apps can tap into Theodolite's advanced camera functions with a camera sharing feature.
View current position on the built-in map with optional offline Outdoors maps that include topo contours (feet or meters), roads, trails, landmarks, campgrounds, ski lifts, and more. Live map markers continually update distance/heading relative to the current location and also show wayfinding info in the main viewfinder. You can draw polygons on the map to mark things like property boundaries and trails, and import/export polygon data via KML.
Share map markers and nav calculator points with other users of Theodolite via text messages or e-mail. This powerful capability opens up a wide range of collaborative uses including team land surveying, accident investigations, spotting wild fires, triangulation of landmarks, and advanced tactical observation and targeting.
Theodolite includes features for serious users like a reference angle mode, nav calculator, map marker import/export, data logging with CSV and KML export (via e-mail, iCloud Drive, or local files), clipboard integration, %grade display, mil compass readout, optical rangefinders (including a mil-based reticle, sniper-style stadiametric graphs, and a variable 4X-24X scope), and colored lens filters to improve use in dark conditions.
Theodolite can provide location in military grid reference system (MGRS) coordinates, Universal Transverse Mercator (UTM) coordinates, British/Irish National Grids, US National Grid, Maidenhead locator system, and six latitude/longitude formats. Optional US State Plane coordinates include SPCS27 and SPCS83 zones covering all US States. The optional Datum Pack adds over 230 geodetic datums to the app to improve position computation from GPS data, covering regions and countries on all continents around the world.
With an optional in-app purchase to enable team tracking, you can share location with up to 20 people on Theodolite's map. Team tracking was developed in conjunction with search and rescue experts to offer a good balance between simplicity and performance.
New for 2019 are AR Layers, including navigational aids like the sun, moon, and Polaris (North star), and the optional US Mountain Summits layer that shows over 70,000 US mountain summits in the viewfinder.
Theodolite has been shown in Apple Keynotes, featured on the App Store, and has been a #1 selling Navigation app in App Stores around the world. Since its introduction in 2009, Theodolite has defined augmented reality navigation. The app continually introduces new technologies, pushing the limits of iOS app development and taking advantage of new hardware capabilities.
Find out why Apple named Theodolite one of the most amazing apps available and showed it being used to explore the Great Wall of China. Where will you take it on your next adventure?
Note: Theodolite is an iPhone app -- see “Theodolite HD” for use on an iPad.
Theodolite 7 lays the groundwork for the next several years of development. The app introduces it's first AR layers, including navigational aids like the sun, moon, and Polaris (North star), and adds a brand new in-app purchase that shows over 70,000 US mountain summits in the viewfinder. These AR layers support Theodolite's new compass correction mode, which lets you slide your finger on the screen to correct compass errors and offsets by aligning the compass with known references. Theodolite 7 brings improvements to night modes, makes it easier to find and buy in-app purchases, and has numerous user interface improvements and tweaks throughout the app. Support for all the latest iOS devices has been added.
Ratings and Reviews
Just gets better and better
Have used this app on and off for several years and seems to improve in features steadily and also in accuracy making use of new capabilities of IPhone hardware.
I used extensively for planning application work where long distance photo montages were required. Being able accurately determine where a location is relative to your location, that you may not have sight of, is essential and theodolite makes this child’s play.
A very useful app for quick on site measurements! I haven’t utilised all it can do yet but vary happy with what I can do.
Only niggle is that it would be good if the screen automatically rotated with the phone, that way I would be able to use the phones volume buttons to take a pic/measurement rather than the screen ‘button’. If the developers could manage that it would be so much easier to use.
Developer Response ,
I agree it would be nice to have, but there are two problems. First, Apple doesn't officially allow third-party apps to use the volume buttons as shutter buttons. Some apps snuck this through review but we tried and were rejected. In terms of orientation, because the app is setup to measure complex angles in 3D, the screen is fixed orientation. You wouldn't want the screen to spin around any time you were trying to measure an inverted angle.
Simple way to view a site
I’ve use this app on many occasions to get an accurate overview of sites. As each picture is taken, the elevation, direction and position of the camera is recorded along with the angles, horizon, etc.
This can then be plotted onto Google Maps or similar to present views around or with a site. Simple but very useful.
- Craig Hunter
- 31.9 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.
- Age Rating
- Rated 4+
- © 2009-2019 Hunter Research and Technology LLC
- In-App Purchases
- World Datum Pack £2.99
- 5,000 Outdoors Map Tiles £0.99
- Team Tracking £0.99
Up to six family members will be able to use this app with Family Sharing enabled.