GridPoint GB vs MX Map Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GridPoint GB
Locate yourself on a paper Ordnance Survey map using your iPhone's GPS and compass, even without mobile reception. It provides your grid reference and heading, with accurate coordinate conversions. Features include Apple Watch integration, location sharing, and sunset/sunrise times.
- GPS and compass for location
- Accurate coordinate conversions
- Apple Watch app and complication
- Location sharing
- Sunset and sunrise times
- Distress signal
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If you have a paper Ordnance Survey (OS) map, GridPoint GB makes it easy to locate yourself — even when you've got no mobile reception. The app uses your iPhone's GPS and compass to provide your current grid reference and heading, and illustrates how to use this to locate yourself on the map. Coordinate conversions are implemented via OS's OSTN02, accurate to within 1m. The app also: * Includes an Apple Watch app and associated complication * Reports full numerical easting and northing, tetrad, raw latitude/longitude, a nearby postcode, and various heading parameters * Has a sharing facility so you can share, copy or store your location * Calculates next sunset and sunrise times * Can emit a distress signal, just in case All features are free to use — the in-app purchase is simply a tip you can give the developer to show appreciation. For details and instructions, please see http://mackerron.com/gridpointgb/ Please note: this app works ONLY in Britain (i.e. England, Scotland or Wales). It does not operate in other parts of the UK or British Isles and cannot provide coordinates in Northern Ireland or the Republic of Ireland, since a different coordinate system is used.
MX Map Mobile
This navigation app works with desktop GIS software to provide a comprehensive mapping system. It currently supports Ordnance Survey maps of Great Britain and Ireland, with more regions and features planned. Users can acquire additional maps through in-app purchases.
- Integrates with Mapyx Quo and MX Map GIS
- Supports Ordnance Survey GB and Ireland maps
- In-app map purchases
- Comprehensive GIS and mobile system
- Future map and functionality updates
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The MX Map Mobile system is designed to be used with Mapyx Quo and MX Map GIS software packages. Maps can be acquired through in-app purchase. This combined solution of Mapyx Quo and MX Map Mobile, provides a comprehensive combined system of full GIS software and a Mobile Application which are fully compatible. Currently only Ordnance Survey GB, and Ordnance Survey Ireland maps are supported but others maps and more functionality will follow. Continued use of GPS running in the background can dramatically decrease battery life. If you experience any problems please contact our help desk in the first instance before posting any negative reviews. You should always provide alternative means of navigation, and not rely on the app in any role that is critical to the safety of life or property. This product does not support any maps purchased before 2015. The Quick Start guide for this app can be found at the link below: http://www.mapyx.com/user_manuals/MXMapMobileQuickStartGuideiOS.pdf
Screenshots
Verdict
The clearest difference is review sentiment: GridPoint GB at 72% against MX Map Mobile's 11%. MX Map Mobile's advantage is in-app purchases (none vs 3) and update cadence (fortnightly vs every 16 months). On price, ads, monetization model 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
Both are free to download. GridPoint GB sells 3 one-off in-app purchases. MX Map Mobile asks for nothing beyond the download.
GridPoint GB ships an update every 16 months, MX Map Mobile fortnightly. The most recent releases landed on November 6, 2026 and November 2, 2026 respectively.
| Parameter | GridPoint GB | MX Map Mobile |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 72.3% of reviews — better | 11.1% of reviews |
| Update frequency | Every 16 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 137 MB |
| Age rating | 4+ | 4+ |
| Developer | George MacKerron | Mapyx Ltd |
Customer experience
GridPoint GB
MX Map Mobile
Bugs and requests
GridPoint GB
Reported bugs
17 issues- Won't open on latest iOS
- App just closes as soon as it opens
- Crashes when opened
- Crashes and closes a few seconds after starting on iOS 9
- Won't open and keeps crashing since iOS upgrade
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- Application remains unfixed since move to iOS9
- Freezes on iPhone 6
- Freezes on phone on home page and does not shut down
- Crash on startup
- Quits on startup on iPhone 6 and iOS9.1
- Not working on latest iOS
- iOS 9 has killed it
- Crashes instantly
- Crashing continuously on iOS9
- Issue with iOS9
- Splash screen appears then it just closes straightaway on iOS9.0.2
- Broken temporarily by iOS 9
Requested features
12 requests- See 8-figure grid and altitude on watch complication
- Switch to tetrad view
- Option to change to 6-figure grid
- Record a small note when saving a location
- Convert to mils mag as well as degrees
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- Option to put in grids and navigate between them
- iWatch version
- See grid magnetic angle without calculation
- OS map layer under the graphic
- Add waypoints and pre-loaded mapping
- Memory Map or other ordnance survey maps on iPhone
- Give tetrad as well as grid reference
MX Map Mobile
Not enough reviews yet to summarise bugs or requests.
In-app purchases
GridPoint GB
- Magnificent tip$2.99
- Majestic tip$4.99
- Monumental tip$8.99
MX Map Mobile
No in-app purchases
