Comparison

Forest Watcher vs UTM Maps

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

Head to head
About

Forest Watcher

Access global forest change data and alerts offline. Identify areas for investigation, collect field evidence with customizable forms, and make informed conservation decisions. Share data and manage teams for effective forest monitoring.

Highlights
  • Offline forest change data access
  • Designate areas of interest
  • Collect field data with forms
  • Overlay contextual layers
  • Route tracking for investigations
  • Share alerts and data
Features
Read full description

Forest Watcher is a mobile application designed to bring the dynamic online forest monitoring and alert systems of Global Forest Watch (GFW) offline and into the field. Forest Watcher allows users to easily access GFW’s forest change data on any mobile device, navigate to areas of detected change, and collect information about what they find, regardless of connectivity. This app provides an affordable and easy-to-use solution to quickly identify areas for patrols or field investigations, collect evidence about forest changes from the field, use the data that’s collected to make evidence-based management and conservation decisions, and investigate remote sensing products in the field. Features: * Designate areas of interest to monitor, up to 20,000 sq km * Store various satellite-based forest change data, such as near-real-time deforestation alerts on your mobile device * Overlay contextual layers, such as Protected Areas and Timber Concessions, or upload other custom datasets * Investigate alerts in the field and collect information (including GPS points and photos) through built-in and customizable forms * Review, analyze, and download data collected with the app * Route tracking to investigate a deforestation alert * Share alerts, areas, routes, reports, contextual layers and basemap tiles or all app content at once. * Manage a team and more through the supplementary desktop application at forestwatcher.globalforestwatch.org If you have any issues downloading or using the app, please reference our “how-to” materials. If the issues persist, please contact us at forestwatcher@wri.org. Any other questions or feedback, please contact us at forestwatcher@wri.org. Full terms and conditions can be found at http://www.globalforestwatch.org/terms.

About

UTM Maps

This app allows users to work with various coordinate systems, including UTM and MGRS, on a map. It supports registering points with addresses, capturing photos with watermarks, and measuring distances and areas. Data can be exported to CSV or KML formats.

Highlights
  • UTM, MGRS, Lat/Lon coordinate support
  • Point registration with geocoding
  • Photo capture with coordinate watermark
  • Area and distance measurement
  • Data export to CSV and KML
  • Field navigation with compass and GPS
Features
Read full description

A simple APP for working with Latitude Longitude, UTM and MGRS coordinates, Maps and GPS. Register points to be displayed on a map or stored in a database complete with readable address data (geocoding). Capture photo with a watermark containing point name, coordinates and address information. Measure area, distance and registering lines and polygons. Export saved data to CSV or KML file format or locate points in the field using your built-in device's compass and GPS or with generating direction route. Register Points UTM Maps allows you to register points and stored in database to display on the map or export to a CSV file. Stored point data will automatically completed with UTM coordinates and readable address (geocoding requires internet access). Searching for Coordinates You can search for Latitude, Longitude, UTM, or MGRS coordinates to display on a map or find them in the field using a compass or Direction Route. Measure Area And Distance No need to go to the field anymore; now you can measure area and distance with various units using this application. Stores line and polygon data in database and displays it on a map. Export lines and polygons data to KML file. Data Properties / Point Details Each data displayed on the map has its own properties, making it easier to navigate and understand. Simply click on a point and the data properties will automatically appear. Find Point On The Field / Stake Out Now you can find coordinates or location in the field easily, the application will direct you to the desired coordinate point with the help of the built-in compass on your device or using Direction Route. Add Photo Add a photo from camera or library complete with a watermark containing name, coordinates and address information. Data List & Export The data list is designed to view data stored in the database, delete unnecessary data, find the location of data in the field or export data to a file. Point data can be exported to CSV files, while line and polygon data can be exported to KML files for use in other software or other devices.

Screenshots

Forest Watcher4 screens
UTM Maps4 screens

Verdict

The call

The clearest difference is in-app purchases: Forest Watcher at none against UTM Maps's 4. Forest Watcher also leads on ads (none vs shown). UTM Maps's advantage is update cadence (every 10 days vs every 3 months) and review sentiment (100% vs 80%). On price, rating, ratings volume 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

Both are free to download. UTM Maps sells 4 in-app purchases, starting at $0.99 per month. Forest Watcher asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Forest Watcher against 5.0 for UTM Maps. Both are backed by a comparable volume of ratings — 8 and 4 respectively. Written reviews are what separate them: 80% of Forest Watcher's written reviews are positive against 100% of UTM Maps's.

UpkeepUpdate frequency

Forest Watcher ships an update every 3 months, UTM Maps every 10 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
Forest Watcher versus UTM Maps: the parameters behind the verdict, then further details
ParameterForest WatcherUTM Maps
PriceFreeFree
Rating5.0 (8 ratings)5.0 (4 ratings)
Positive reviews80.0% of reviews100.0% of reviews — better
Number of ratings8 — better4
Update frequencyEvery 3 monthsEvery 10 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better17.6
Further details — not scored
Size79 MB20 MB
Age rating4+4+
DeveloperWorld Resources InstituteYogi Yogantara

Customer experience

Forest Watcher

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

UTM Maps

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Forest Watcher

No in-app purchases

4 purchases

UTM Maps

Subscriptions4
  • Remove Ads 1 Month$0.991 Month
  • Elevation (1 Month)$1.991 Month
  • Elevations (3 Months)$3.993 Months
Show 1 more
  • Remove Ads 1 Year$5.991 Year

Questions

Is Forest Watcher free?
Forest Watcher is free to download, with no in-app purchases.
Is UTM Maps free?
UTM Maps is free to download, with in-app purchases available.
Which has better reviews, Forest Watcher or UTM Maps?
Forest Watcher and UTM Maps are both rated 5.0 out of 5 on the App Store, from 8 and 4 ratings respectively.
Do Forest Watcher or UTM Maps have ads?
UTM Maps shows ads; Forest Watcher does not.
Which is updated more often, Forest Watcher or UTM Maps?
Forest Watcher ships an update every 3 months, and UTM Maps every 10 days. Most recently, Forest Watcher was updated on November 3, 2026 and UTM Maps on October 30, 2026.

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