GB Grid Converter vs Mgrs & Utm Map
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GB Grid Converter
This app converts British National Grid References to Latitude/Longitude coordinates and vice-versa. It supports both OSGB36 and WGS84 datums. You can view converted coordinates in Maps, send them to other apps, or copy them to your clipboard.
- Convert British National Grid to Lat/Long
- Convert Lat/Long to British National Grid
- Supports OSGB36 and WGS84
- View coordinates in Maps app
- Send coordinates to other apps
- Copy coordinates to clipboard
- Fuzzy parsing for input
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Easily convert between British National Grid References (OS Grid Refs) and Latitude, Longitude coordinates (both OSGB36 and WGS84 are supplied). Then, easily view the converted coordinate in the Maps app, or send it to GPS Log (our app for recording your travels). Or copy to the clipboard using the standard iPhone functions. Fuzzy parsing logic allows you to input coordinates in a variety of ways, like "TQ 30267 76930", and "TQ302769". If you have any problems using this software, please contact us by email: support-at-gpslog.com so we can work with you to solve the problem. Issues left as reviews are difficult to address.
Mgrs & Utm Map
Navigate the outdoors with precision using GPS and multiple coordinate systems. Ideal for military, hikers, and outdoor enthusiasts, it displays your accurate position on various map layers and supports KML import/export.
- GPS, GALILEO, GLONASS support
- Accurate position display
- Multiple map layers
- KML import/export
- Outdoor activity helper
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This application is GPS and coordinate systems helper especially for military personnel. It is also a complete helper for mountaineering, trekking and hiking, cross running, scouting, hunting, fishing, geocaching, off-road navigation and all other outdoor activities and sports. With satellite navigation systems such as GPS, GALILEO and GLONASS (GNSS) supported by your device and your sensors, you can see your most accurate position on different map layers. *Import/Export KML
Screenshots
Verdict
The clearest difference is ads: GB Grid Converter at none against Mgrs & Utm Map's shown. GB Grid Converter also leads on rating (5.0 vs 4.6) and review sentiment (76% vs 54%). Mgrs & Utm Map's advantage is ratings volume (2.6K vs 1) and chart position (#185 vs unranked). On price, update cadence, in-app purchases and monetization model 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. GB Grid Converter sells 1 one-off in-app purchase and Mgrs & Utm Map sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
GB Grid Converter holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Mgrs & Utm Map has 2.6K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 76% of GB Grid Converter's written reviews are positive against 54% of Mgrs & Utm Map's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | GB Grid Converter | Mgrs & Utm Map |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.6 (2.6K ratings) |
| Positive reviews | 75.9% of reviews — better | 54.3% of reviews |
| Number of ratings | 1 | 2.6K — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | #185 — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 | 16.6 |
| Further details — not scored | ||
| Size | 10 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Geospike Pty Ltd | Vahid Cataltas |
Customer experience
GB Grid Converter
Mgrs & Utm Map
User reviews
GB Grid Converter
From 1 App Store ratingsWhat we love
- 👍 Brilliant app overall
- 📍 Accurate grid references
- 🗺️ Shows location on map
- 🚀 Navigates to grid reference
- 💡 Instant and accurate grid reference
Room to improve
- 🐛 Drop pin no longer gives TQ
- 🔊 No sound when driving
- 📉 Accuracy issues (can't get to 5m)
- 🐛 Clunky and inaccurate interface
- 💥 Crashes iPad Air
Mgrs & Utm Map
From 2.6K App Store ratingsWhat we love
- ⭐ Excellent for military utilities
- ⭐ Surprisingly powerful and accurate for a free app
- ⭐ Great app to have, recommended
Room to improve
- 🚫 Ads block crucial information like coordinates
- 🚫 Layers and features not working as expected
- 🚫 App crashes and becomes unusable
- 🚫 Paid version doesn't work as advertised
Bugs and requests
GB Grid Converter
Reported bugs
6 issues- Drop pin does not give TQ anymore unless at location
- No sound when driving to a grid reference
- App crashes when asking for directions on iPad mini
- Latest update has issues, doesn't work on iPhone or iPad
- New marker pins on map not accurate, same grid ref for all pins
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- App is deficient due to Apple's default map
Requested features
4 requests- Direct reference to What 3 Words
- Watch compatibility
- Convert WGS84 to OS grid
- Increase accuracy by another decimal place
Mgrs & Utm Map
Reported bugs
3 issues- Issues with importing and exporting KML files
- Inability to plot grids and see coordinates
- App constantly re-centers to user's location
Requested features
5 requests- Offline map support
- Ability to rename and manage layers
- Compass calibration and orientation options
- Sharing and syncing of waypoints/markers
- More map types and grid formats (e.g. British National Grid)
In-app purchases
GB Grid Converter
- GB Grid Converter Premium$10.00
Mgrs & Utm Map
- Pro Features$24.99
Questions
Is GB Grid Converter free?
Is Mgrs & Utm Map free?
Which has better reviews, GB Grid Converter or Mgrs & Utm Map?
Do GB Grid Converter or Mgrs & Utm Map have ads?
Which is updated more often, GB Grid Converter or Mgrs & Utm Map?
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