# Forest Watcher vs UTM Maps

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.

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.

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.

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.

## The numbers

| Metric | Forest Watcher | UTM Maps |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (8 ratings)](https://appshunter.io/ios/app/forest-watcher/id1277787116/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/utm-maps/id6748431968/reviews) |
| Number of ratings | **8** | 4 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 79 MB | 20 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [World Resources Institute](https://appshunter.io/developer/351884757) | [Yogi Yogantara](https://appshunter.io/developer/1825780236) |

## What reviewers say

### Forest Watcher

[App page](https://appshunter.io/ios/app/forest-watcher/id1277787116)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### UTM Maps

[App page](https://appshunter.io/ios/app/utm-maps/id6748431968)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads 1 Month | $0.99 | per month |
| Elevation (1 Month) | $1.99 | per month |
| Elevations (3 Months) | $3.99 | per 3 months |
| Remove Ads 1 Year | $5.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*