Comparison

Theodolite vs iCMTGIS PRO

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Theodolite

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.

Highlights
  • 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
Read full description

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 photos and movies with 2X-8X zoom. Overlay geographical data, angle markings, 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, 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. 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. With an optional in-app purchase to enable team tracking, you can share location with up to 20 people on Theodolite's map. Theodolite includes features for serious users like a reference angle mode, nav calculator, map marker import/export, manual and automatic data logging with CSV and KML export, 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 night 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, Map Grid of Australia, 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. AR Layers include navigational aids like the sun, moon, planets, 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. And be sure to check out the all-new "Theodolite for Watch" and put Theodolite on your wrist!

About

iCMTGIS PRO

This professional GPS/GIS mapping and data collection tool enables users to efficiently gather location-based information and perform stakeout tasks. It supports various coordinate systems and allows for custom feature databases, making it ideal for land management, surveying, and other field applications.

Highlights
  • GPS/GIS mapping and data collection
  • Stakeout functionality
  • Support for multiple coordinate systems
  • Customizable feature-attribute database
  • Import/export of various file formats
  • Attach photos to data points
  • Track recording
Features
Read full description

iCMTGIS PRO is a professional GPS/GIS mapping, data collection and stakeout app for use on the iPad and iPhone devices. It can be used to effectively collect data and increase productivity for utilities, wildlife, natural resources, land management, surveying, soil study, archaeology, drone control points and other land-based or air-borne GPS/GIS applications. LLA, UTM, State Plane and local coordinate systems supported. It also provides the ability to create a local NEZ coordinate system to use with real-world designs on paper. Requires iOS 9 or newer version of iOS. iCMTGIS PRO will work with any iOS compatible GPS devices. In addition, it is able to display the GPS status for a few specific external GPS receivers and record accuracy and quality information for the recorded position - e.g. EOS Arrow Gold, Geneq SXBlue Platinum, Juniper Systems Geod. When used with these GPS receivers, you will be able to set PDOP mask and RMS limit for quality assurance. iCMTGIS PRO can make use of the NGS Geoid12a binary files. It can be a valuable RTK data collection and stakeout tool when used with a compatible GPS receiver that outputs the needed accuracy information. iCMTGIS PRO will let you define a custom Feature-Attribute database to facilitate data collection. It will let you log GPS Points, Lines and Area Features and tag them with predefined or manually added descriptions. It will let you log multiple GPS fixes and automatically calculate the average position. It will let you record nested Points while recording a Line or Area Feature. It will also let you digitize Features on top of a background map or create traverse points by entering angles and distances. You may load a GeoTiff image to use as a static or moving background map. You can record your track while performing other tasks using this app. Enter deed calls to create a deed plot. View distances and areas on the spot. Create buffers. Create a grid over an area. Crate contour lines based on points with (x,y,z) coordinates. Attach photos. Easily import/export Shapefiles, Excel files, DXF files, KML files and text files, send/receive files via ftp or email, and store files in the Cloud. Generate and view PDF files. The app comes with a detailed built-in help document. Free relevant GPS/GIS training videos are provided on the Internet. iCMTGIS PRO provides Point Stakeout as well as Line Stakeout functionality to help you get to a specific Point or to move along a pre-defined Line or perimeter. iCMTGIS PRO is a one-time purchase without any annual subscription fees. It will run on iPad devices as well as iPhone devices. Please note: Location data depends on the GPS receiver used. Continued use of GPS running in the background can dramatically decrease battery life. iCMTGIS PRO will let you easily toggle the GPS on or off.

Screenshots

Theodolite4 screens
iCMTGIS PRO4 screens

Verdict

The call

The clearest difference is price: Theodolite at $8.99 against iCMTGIS PRO's $299.99. Theodolite also leads on ratings volume (906 vs 7) and chart position (#6 vs unranked). iCMTGIS PRO's advantage is in-app purchases (none vs 8) and review sentiment (100% vs 88%). On rating, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Theodolite costs $8.99 and iCMTGIS PRO $299.99 up front. Theodolite sells 8 one-off in-app purchases. iCMTGIS PRO asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

iCMTGIS PRO holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: Theodolite has 906 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 88% of Theodolite's written reviews are positive against 100% of iCMTGIS PRO's.

UpkeepUpdate frequency

Theodolite ships an update every 4 months, iCMTGIS PRO every 3 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 5 level
Theodolite versus iCMTGIS PRO: the parameters behind the verdict, then further details
ParameterTheodoliteiCMTGIS PRO
Price$8.99 — better$299.99
Rating4.7 (906 ratings)4.9 (7 ratings) — better
Positive reviews87.8% of reviews100.0% of reviews — better
Number of ratings906 — better7
Update frequencyEvery 4 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#6 — better—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.6
Further details — not scored
Size30 MB15 MB
Age rating4+4+
DeveloperCraig HunterCORVALLIS MICROTECHNOLOGY, INC.

Customer experience

Theodolite

All ratings902 ratings
Positive92.8%
Neutral2.9%
Negative4.3%
Written reviews476 reviews
Positive87.8%
Neutral4.8%
Negative7.4%

iCMTGIS PRO

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

8 purchases

Theodolite

One-time8
  • 1,000 Outdoors Map Tiles$0.99
  • Team Tracking$1.99
  • World Datum Pack$2.99
Show 5 more
  • US Mountain Summits AR Layer$2.99
  • 5,000 Outdoors Map Tiles$4.99
  • 10,000 Outdoors Map Tiles$8.99
  • 20,000 Outdoors Map Tiles$17.99
  • US State Plane Coordinates$24.99
None

iCMTGIS PRO

No in-app purchases

Questions

Is Theodolite free?
Theodolite costs $8.99, and also offers in-app purchases.
Is iCMTGIS PRO free?
iCMTGIS PRO costs $299.99, with no in-app purchases.
Which has better reviews, Theodolite or iCMTGIS PRO?
iCMTGIS PRO is rated higher. Theodolite averages 4.7 out of 5 from 906 ratings, while iCMTGIS PRO averages 4.9 from 7 ratings.
Do Theodolite or iCMTGIS PRO have ads?
Neither Theodolite nor iCMTGIS PRO shows ads.
Which is updated more often, Theodolite or iCMTGIS PRO?
Theodolite ships an update every 4 months, and iCMTGIS PRO every 3 months. Most recently, Theodolite was updated on October 26, 2026 and iCMTGIS PRO on October 24, 2026.

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