Comparison

Avenza Maps vs iCMTGIS III

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

Head to head
About

Avenza Maps

Navigate any terrain with offline GPS maps, even without cell service. Explore a vast Map Store for hiking, biking, and travel, or import your own custom maps. Record tracks, add notes, and identify your location precisely.

Highlights
  • Offline GPS navigation
  • Real-time GPS position and direction
  • Record GPS tracks
  • Add photos and notes to locations
  • Import custom maps
  • Map Store with professional maps
Features
Read full description

New Description: Avenza Maps is a powerful offline navigation app for professional field work. Use offline maps with GPS navigation to stay on track anywhere—no signal required, so you can navigate confidently with precise location awareness. Discover and download trail, topographic, land use, utility, nautical, and survey data from trusted publishers, or import your own maps. Avenza supports custom map import, letting you work with PDF maps, GeoPDF®, and GeoTIFF files for reliable navigation both on and off the grid. Explore trusted outdoor & professional data Access the largest mobile Map Stores featuring content from: National Geographic National Park Service US Forest Service (USFS) US Geological Survey (USGS) NOAA, FAA, BLM, and more Avenza is widely used by professionals worldwide for surveying, land management, environmental work, GIS field operations, and more. Make your own maps? Import your custom maps and never get lost off the grid. Maps are available for free or purchase from the in-app Map Store. Plus subscription is available for unlimited custom map imports. Pro subscription is available for professional users with full access to all features and mapping tools. ENHANCE YOUR MAPS WITH THESE FEATURES - Locate your realtime GPS position and find direction, even when offline - Record GPS tracks during your activities - Navigate to features using compass tools - Add photos and notes to any location - Add placemarks to your map and style them with recreational symbols - Measure distances and estimate times - Supports KML, GPX, and CSV Formats GET MORE WITH AVENZA MAPS PLUS For users who need more - Up to 20 custom PDF, GeoPDF®, and GeoTIFF imports - Create geofences for up to 50 individual features and up to four geofence layers GET EVEN MORE WITH AVENZA MAPS PRO For professionals and organizations who require an offline mapping solution with location awareness with more features and tools - Unlimited import of your own geospatial PDF, GeoPDF®, and GeoTIFF maps - GPS averaging, additional coordinate display formats, custom symbol sets - Connect high-accuracy GPS devices via Bluetooth - Created unlimited geofences and get global geofence notifications - Convert tracks to areas - Map orientation lock - Import and export Esri® Shapefiles - Import and manage custom symbology sets - Priority technical support Avenza Maps Pro subscription required for commercial, academic, government, and professional use. Avenza Maps Plus and Pro are available as annual subscriptions. You can subscribe and pay through your Apple ID. Subscriptions are 12 months in duration and will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Your account will be charged within 24 hours prior to the end of the current period at the rate of your selected plan. Auto-renewal can be turned off in your iTunes Account Settings. If you didn’t use iTunes to subscribe, you can manage your subscription through Avenza. SUPPORT We can help! Go to support.avenzamaps.com LEGAL Privacy Policy: avenzamaps.com/legal/privacy-policy.html Terms of Use: avenzamaps.com/legal/terms.html CONNECT WITH US avenzamaps.com facebook.com/avenzamaps twitter.com/avenzamaps instagram.com/avenzamaps

About

iCMTGIS III

Features
Read full description

iCMTGIS III is a professional GPS/GIS mapping app that will let you record Points, Lines and Area Features with date/time stamp and pre-defined or manually added descriptions. You could also digitize Features on top of a background map or create points by entering angles and distances. LLA, UTM, State Plane and local coordinate systems supported.You could record your track while performing other tasks using this app. View distances and areas on the spot. Stakeout to points or along a Line or Area Feature. Easily import/export Shapefiles, send/receive files via ftp or email, and store files in the Cloud. Effectively collect data and increase productivity for utilities, natural resources, land management, archeology and other GPS/GIS applications. Please note: Location data depends on the GPS receiver used. Continued use of GPS running in the background can dramatically decrease battery life. iCMTGIS III will let you easily toggle the built-in GPS on or off. This app comes with a built-in help file. Requires iOS 9 or newer version of iOS. iCMTGIS III provides the following enhancements over the iCMTGIS II GPS/GIS Data Collection app. 1. Ability to load geo-referenced .tif file as off-line background image for GPS mapping 2.Ability to enter Antenna Height and specify incoming GPS datum for RTK data collection 3. Distance mode for offset GPS data collection 4. Classify Features on a Topic layer 5. Export Shapefiles into a folder; import Shapefiles from a folder 6. Import/Export Feature data in Excel, DXF, KML formats 7. Export Feature data to GPX 8. Import/Export Text Files (with fixed-length field option) for Point Topics 9. Photo support 10. Point Stakeout and Line Stakeout functions. 11. Insert node or Delete node to modify a Line or Area 12. Join or Disconnect Line/Area 13. Nested Point defaults to last used Point Topic. 14. New Feature List format with symbol/pattern support 15. Ability to add built-in Attributes for a Topic 16. Sort/Search/Batch Delete Features and view statistics 17. Create deed plot by entering Deed Calls 18. Export to PDF

Screenshots

Avenza Maps4 screens
iCMTGIS III4 screens

Verdict

The call

The clearest difference is price: Avenza Maps at Free against iCMTGIS III's $199.99. Avenza Maps also leads on chart position (#17 vs unranked). iCMTGIS III's advantage is in-app purchases (none vs 10) and iOS requirement (9.0 vs 18.0). On 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

Avenza Maps is free to download; iCMTGIS III costs $199.99 up front. Avenza Maps sells 10 in-app purchases, starting at $34.99 per year. iCMTGIS III asks for nothing beyond the download.

UpkeepUpdate frequency

Avenza Maps ships an update every 2 months, iCMTGIS III every 3 months. The most recent releases landed on November 10, 2026 and November 1, 2026 respectively.

Scorecard4 real differences · 7 level
Avenza Maps versus iCMTGIS III: the parameters behind the verdict, then further details
ParameterAvenza MapsiCMTGIS III
PriceFree — better$199.99
Rating4.8 (129K ratings) — better—
Positive reviews51.2% of reviews—
Number of ratings129K — better—
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#17 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.09.0 — better
Further details — not scored
Size344 MB14 MB
Age rating4+4+
DeveloperAvenza Systems Inc.CORVALLIS MICROTECHNOLOGY, INC.

Bugs and requests

Avenza Maps

Reported bugs

3 issues
  • Maps disappearing after updates
  • Airdrop functionality issues
  • Compatibility problems with newer devices

Requested features

5 requests
  • Ability to stitch/overlay multiple maps
  • Apple CarPlay integration
  • Improved map search and discovery
  • Easier map management and organization
  • Ability to export/share recorded tracks

iCMTGIS III

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Avenza Maps

Subscriptions2
  • Avenza Maps Plus1 Month trial$34.991 Year
  • Avenza Maps Pro1 Month trial$169.991 Year
One-time8
  • Forest Service Topo Product$0.99
  • Garmin Tier 1$0.99
  • BaseImage, LLC Map Product$0.99
Show 5 more
  • Western Michigan University Map Product$2.99
  • US Forest Service R5 Map Product$4.99
  • US Forest Service R6 Product$4.99
  • Map the Xperience Map Product$4.99
  • National Geographic Map Product$11.99
None

iCMTGIS III

No in-app purchases

Questions

Is Avenza Maps free?
Avenza Maps is free to download, with in-app purchases available.
Is iCMTGIS III free?
iCMTGIS III costs $199.99, with no in-app purchases.
Do Avenza Maps or iCMTGIS III have ads?
Neither Avenza Maps nor iCMTGIS III shows ads.
Which is updated more often, Avenza Maps or iCMTGIS III?
Avenza Maps ships an update every 2 months, and iCMTGIS III every 3 months. Most recently, Avenza Maps was updated on November 10, 2026 and iCMTGIS III on November 1, 2026.

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