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GPS OS Grid Reference

GPS OS Grid Reference

Great Britain and Ireland

17 ratings
99 reviews
💪 Health & Fitness
🗺️ Navigation
Free
In-App Purchases

Details

  • Released
  • Updated
  • May 30, 2015
  • August 11, 2026

Features

Developer

Tomstrails.com
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GPS OS Grid Reference screenshot #1 for iPhone
GPS OS Grid Reference screenshot #2 for iPhone
GPS OS Grid Reference screenshot #3 for iPhone
GPS OS Grid Reference screenshot #4 for iPhone
GPS OS Grid Reference screenshot #5 for iPhone
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🧾Free
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❓5 answered
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About

This app accurately pinpoints your location on Ordnance Survey maps for Great Britain and Ireland, even without a phone signal. It offers precise grid references, waypoint creation, and navigation features. The display is designed for clarity in all lighting conditions, and it optimizes battery usage.

✓Offline map location
✓Accurate grid references
✓Waypoint creation and management
✓High-contrast display
✓Battery optimization
✓Share waypoints
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What users say

Summarized from real user reviews of GPS OS Grid Reference. Based on 17 reviews and a 4.4/5 average, it highlights the 14 positives and 15 negatives reviewers mention most about this Navigation app.

Positive things

  • 👍Simple and easy to use
  • 🎯Accurate grid references
  • 🚀Fast and quick updates
  • 💡Works without phone signal
  • 🗺️Useful for navigation and backup
  • ✅Does what it says on the tin
  • 🌟Clear and legible display
  • 🆓Free to use (mostly)
  • 👍Good for emergency services
  • ⛰️Helpful for outdoor activities
  • 📱Works on Apple Watch (some)
  • 💯Reliable performance
  • 💡No ads (for some)
  • 👍Lightweight and efficient

Negative things

  • 🐛Blurry satellite maps
  • 🧭Compass not accurate
  • 📉Accuracy dropped recently
  • 🗺️No map data included
  • 🚫Cannot search locations
  • Staticpage, no options
  • 📍Not useful outside of UK
  • 📉Accuracy varies indoors
  • ⬆️Letters smaller than numbers
  • 🤷‍♂️Cannot link to a map
  • 💾No ability to store/recall info
  • ❓Purchased better grade, no added functionality
  • 🚫No Apple Watch support (for some)
  • 🐛Location services dimmed/unusable (iOS)
  • ❓Lat/long display missing
See all reviews

What's New in GPS OS Grid Reference

3.0.4

August 11, 2026

Minor improvements to the interface.

Subscription plans

Premium Features

In-app premium features.

$5.991 Year
7 Days trial
How to cancel GPS OS Grid Reference subscription ⁉️
1

In-App Purchases

Free

Feature Pack - Compass & sharing features.

Adds magnetic compass and social sharing features

User reviews

Most RecentHighest RatedLowest Rated

Perfect

What an excellent app, I used to carry around my Garmin Etrex to mark find spots when I’m out metal detecting, now I just use this brilliant app, it uses the grid reference that Scottish treasure trove prefers for find spots-my only regret is that I wish I’d have found the app sooner, well done to the app developers for making this app.
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LamoieLamoie

Response from developer

Thank you for your kind comments Lamoie, I am please you find the app useful. Happy hunting!

Very useful

I don’t use it often, but when I need it, it’s invaluable
Colm64Colm64

Not bad

Not that bad of an app
ScorchlerScorchler

Good App

Great app, however I’m finding that on the Waypoint finder in the map section when changed to Satellite it’s extremely blurry
shawnscotshawnscot

An Excellent Tool

We find this perfect for marking up find spots whilst metal detecting!
ReconRichyReconRichy
See 94 more reviews

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User experience

🐞

Reported Bugs

5 issues

Waypoint finder satellite view is blurry

Bug

Compass is not accurate

Bug

Accuracy has dropped recently

Bug

Location services permanently dimmed off (iOS)

Bug

App does not work for users not in England

Bug
✨

Requested Features

10 requests

Add map data and search functionality

Feature

Improve satellite map clarity

Feature

Add ability to view location on a map

Feature

Enable navigation from point to point

Feature

Add Apple Watch equivalent app

Feature

Display latitude and longitude

Feature

Add a dynamic display for accuracy improvement

Feature

Implement time averaging for accuracy

Feature

Allow copying grid reference to clipboard

Feature

Add facility to store and recall reference information

Feature

FAQ

What does the GPS OS Grid Reference app do?

This app provides a fast and accurate way to determine your precise location on Ordnance Survey maps for Great Britain and Ireland. It works even in areas with no phone signal, making it ideal for remote locations. You can view your position, get grid references, and manage waypoints.

What are the key features of this app?

Key features include offline map functionality, highly accurate OSTN15 transform data for precise grid references (6, 8, and 10 figure), a large high-contrast display for readability, optimized battery usage, the ability to create and manage waypoints, and the option to share waypoints.

Is this app free to use?

The app is free to download and use, but it offers in-app purchases. This suggests that some advanced features or data might require an additional purchase to unlock.

What devices is this app compatible with?

The description mentions features like 'Apple Maps' for directions and sharing with 'other apps or users', implying compatibility with iOS devices. It also highlights its ability to work without a phone signal, suggesting it relies on GPS hardware.

Who would benefit from using this app?

This app is designed for individuals who need precise location data on Ordnance Survey maps, such as hikers, climbers, surveyors, emergency services, and anyone exploring remote areas of Great Britain and Ireland where mobile reception is unreliable.