Tomstrails GPS UTM vs Trimble Mobile Manager
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tomstrails GPS UTM
This app provides precise UTM grid references and displays your location on topographic maps. It works offline, supports various regional datums, and offers multiple coordinate formats for easy sharing and use in other applications.
- Fast and accurate UTM grid reference
- Locate position on topographic maps
- Works without phone signal
- Supports regional datums (e.g., ED50)
- Multiple coordinate formats (1m, 10m, 100m)
- Share coordinates with other apps
- High contrast display for readability
Read full descriptionHide full description
GPS UTM displays a fast and accurate UTM grid reference. Locate your position on topographic maps. GPS UTM supports many of the regional datums used around the world including ED50. ∙ No phone signal required - works in the most remote locations. ∙ 1 metre, 10 metre and 100 metre formats. ∙ Paste your coordinate into other apps or share with other people. ∙ A large, clear, high contrast display ensures you can easily read your position in any light conditions. ∙ Optimal battery use based on speed of travel and current charge level ensures all day use. ∙ No Adverts. GPS UTM - know where you are.
Trimble Mobile Manager
This application acts as a bridge, allowing other software to connect with Trimble GNSS receivers. It provides detailed information on position accuracy, quality control, and real-time correction data. Users can also access satellite tracking and constellation usage details.
- Interfacing with Trimble GNSS receivers
- Position accuracy and quality control data
- Real-time corrections
- Satellite tracking information
- Constellation usage details
Read full descriptionHide full description
Trimble® Mobile Manager is a middleware and configuration application to enable third party applications to interface to Trimble GNSS receivers. This app is compatible with the Trimble Catalyst DA2 receiver and Trimble R Series receivers (R980, R580, R2, R12i etc.). Key features Provides access to position accuracy and quality control related information Allows use of real-time corrections with your GNSS receiver Access to satellite tracking and constellation usage information Technical Support Contact your Trimble partner in the first instance. If you have a technical issue, send a TMM log file using the “Share log file” feature inside the Help menu of the app.
Screenshots
Verdict
The clearest difference is review sentiment: Tomstrails GPS UTM at 84% against Trimble Mobile Manager's 9%. Tomstrails GPS UTM also leads on rating (4.8 vs 1.9) and ratings volume (1.6K vs 40). Trimble Mobile Manager's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On price, update cadence and ads 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
Both are free to download. Tomstrails GPS UTM sells 1 one-off in-app purchase. Trimble Mobile Manager asks for nothing beyond the download.
Tomstrails GPS UTM holds the better App Store score, 4.8 against 1.9. That said, the two scores are not equally well evidenced: Tomstrails GPS UTM has 1.6K ratings behind it against 40, so its average is the more settled of the two. Written reviews point the same way: 84% of Tomstrails GPS UTM's written reviews are positive against 9% of Trimble Mobile Manager's.
Tomstrails GPS UTM ships an update every 6 weeks, Trimble Mobile Manager monthly. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.
| Parameter | Tomstrails GPS UTM | Trimble Mobile Manager |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (1.6K ratings) — better | 1.9 (40 ratings) |
| Positive reviews | 83.8% of reviews — better | 9.1% of reviews |
| Number of ratings | 1.6K — better | 40 |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 226 MB |
| Age rating | 4+ | 4+ |
| Developer | Tomstrails.com | Trimble Inc. |
Customer experience
Tomstrails GPS UTM
Trimble Mobile Manager
Bugs and requests
Tomstrails GPS UTM
Reported bugs
2 issues- Stopped working after iOS update
- UTM grids were off initially, required setting changes
Requested features
4 requests- Add support for Morocco coordinate system
- Add option to average readings and hold the result
- Add option to reduce coordinate display to 6 digits for emergency use
- Bring back previous features like degrees/minutes display and ability to edit messages
Trimble Mobile Manager
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Tomstrails GPS UTM
- Feature PackFree
Trimble Mobile Manager
No in-app purchases
Questions
Is Tomstrails GPS UTM free?
Is Trimble Mobile Manager free?
Which has better reviews, Tomstrails GPS UTM or Trimble Mobile Manager?
Do Tomstrails GPS UTM or Trimble Mobile Manager have ads?
Which is updated more often, Tomstrails GPS UTM or Trimble Mobile Manager?
Other comparisons
