Hunter Research and Technology, LLC
  • Navigation
  • 2009-11-30
    Release date
  • Requires iOS 11.4 or later.
  • 8.99$

Theodolite HD is a single application that provides a compass, inclinometer, rangefinder, GPS, map, nav calculator, and an augmented reality photo and video camera. One of the first augmented reality apps, theodolite, was created in 2009 and has been enjoyed by millions of people ever since. 

The app is excellent for outdoor sports, sightseeing, navigation, and finding your way around. It’s a pro-level app used by surveyors, geologists, architects, engineers, competitive athletes, first responders, military personnel, and search and rescue teams worldwide.

Data Overlay

Theodolite allows you to take geotagged photos and films with 2X-8X digital zoom and fast processing. You can immediately add geographical data, date, time, and personal comments to pictures and films for future reference.


With the built-in map, you can view your current position on an Outdoors map that includes topographic contours (feet or meters), roads, trails, landmarks, campgrounds, ski lifts, and more. Live map markers update distance and direction relative to the current location and provide wayfinding information on the primary camera screen.

Share Maps

You may share map markers and nav calculator points with other Theodolite users via text or e-mail. This ability offers a broad range of collaborative applications, including team land surveying, accident investigations, spotting wild fires, triangulation of landmarks, and advanced tactical observation and targeting operations.

Reference System

Theodolites can provide location data in military grid reference system (MGRS) coordinates, Universal Transverse Mercator (UTM) coordinates, the British/Irish National Grids, the US National Grid, the Maidenhead locator system, and six latitude/longitude formats. State Plane coordinates are available for the US, including SPCS27 and SPCS83 zones covering all US states. Geodetic data covering all continents are included in the Datum Pack, which adds over 230 data to the app for more accurate positioning from GPS data.

Other Features

Serious users may take advantage of Theodolite’s reference angle mode, nav calculator, map marker import/export, data logging with CSV and KML export (via email or iCloud Drive), system-wide clipboard integration, percent grade display, mil compass readings, optical rangefinders (which include mil-based reticles for snipers, stadiametric graphs, and a 4X-24X zoom scope), and colored lens filters to improve visibility in the dark and preserve night vision.


Theodolite is a great tool for surveying and measuring distances. It is very accurate and easy to use. If you need to measure distance or take precise measurements, theodolite is the tool for you.

Ratings and reviews

No reviews added for this app