Theodolite

Theodolite

AR Navigation Viewfinder

880 ratings
474 reviews
$8.99
In-App Purchases

Details

  • Released
  • Updated
  • November 30, 2009
  • June 30, 2025
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About

This app combines a compass, inclinometer, rangefinder, GPS, and map with augmented reality features. Capture photos and videos with overlaid geographical data, and navigate using detailed offline maps. Share locations and collaborate with others for various outdoor and professional uses.

Augmented reality viewfinder
Compass and inclinometer
GPS and map navigation
Data-overlay photo/video camera
Offline map support
Rangefinder and nav calculator
Coordinate system support
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What's New in Theodolite

9.1

June 30, 2025

New measure tool on map screen to compute distance and heading. Polygon popup label now includes perimeter length. Enlarged size of touch target for camera shutter button to include entire lower corner of screen for easier taps. Options to control specific geo-data elements included in photo/movie overlay. Revised rangefinder code for better fidelity on multi-lens camera systems. Fixed issue where certain characters in map marker titles would cause problems for KML export to Google Earth. Updated camera sharing feature that allows other apps to use Theodolite's camera for image & data capture. Minor bug fixes and tweaks.

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In-App Purchases

$1.99

Team Tracking

Track friends and team members in Theodolite

Charts

Top Paid

📈 17+1

Navigation

This app rose +1 position in Navigation chart.

Last updated on July 19, 2026.

User reviews

The best app in this class

I have been using Theodolite for over 12 years. It never fails and is always working as intended. Perfect for remote locations. Thanks for the best app and continuous updates.

Very Useful

Update. If I hated the iPhone, I’d buy a used one just to have this app.

I use this when building antennas, and any structure to check for plumb, level and height.

On the range for distances when initially zeroing a rifle scope.

Incomparable!

This is one of the best apps I’ve ever owned.

Response tool

We used Theodolite while responding to oil spills along the East Coast of Vancouver Island. The USCG DRAT from the 13th CG District introduced us to Theodolite and it’s powerful trig features using GPS, angles and calculated distances.
The photo background is a great asset also.
This app is very easy to use. With a little practice it becomes a powerful field tool.
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55

This is a awesome app
Very professional

Developer apps

FAQ

What does Theodolite do?

Theodolite is a multi-function viewfinder that integrates a compass, inclinometer, rangefinder, GPS, and map. It utilizes augmented reality to overlay geographical data onto photos and videos, aiding in navigation, measurement, and outdoor activities.

What are the key features of Theodolite?

Key features include an AR viewfinder, compass, inclinometer, rangefinder, GPS, map with offline options, a camera that captures data-overlay photos and videos, and various coordinate system support. It also offers a navigation calculator and collaborative sharing capabilities.

Is Theodolite free to use?

The app is free to download and use, offering a core set of features. However, certain advanced functionalities, such as team tracking, are available through optional in-app purchases.

What kind of devices is Theodolite compatible with?

Theodolite is designed for mobile devices. While specific compatibility details are not provided in the description, it is generally available on platforms that support augmented reality and GPS functionalities.

Who would benefit from using Theodolite?

The app is beneficial for a wide range of users, including surveyors, geologists, architects, engineers, outdoor sports enthusiasts, first responders, military personnel, and search and rescue teams who require precise navigation, measurement, and data recording tools.