Provides a clear and concise display of your position in map coordinates used widely around the world.

• British Grid, used by Ordnance Survey in Great Britain.
• Irish Grid, used by Ordnance Survey in Ireland.
• MGRS (Military Grid Reference System)
• New Zealand TM, used by LINZ.
• Swiss Grid, used by Swisstopo in Switzerland.
• UTM used worldwide with both the WGS-84 datum and ED50 in parts of Europe.
• Latitude & Longitude in decimal and sexagesimal notation.

Tomstrails GPS optimizes the frequency of position updates depending on battery charge and speed of travel to make sure you can always make a call at the end of the day, great for multi-day trips. The GPS is never enabled when the app is in background.

A clear, high contrast display ensures you can read the position quickly in any light conditions. Simultaneous grid formats allows emergency services to coordinate ground and aerial support.

Follow us on Twitter @tomstrails for product information and support.

What's New

Version 2.2

Custom Share format including grid(s), elevation, time and Google Maps.

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Ratings and Reviews

Great for exploring.


This app is perfect for sharing your location with anybody.

Handy and clear


Very large and clear display if you need coordinates in a hurry on a small screen without the baggage of a map. I've got other apps that specialize in detailed maps thanks, but this app lets me see coordinates clearly and in a hurry.

To the author: please allow us a few options for the copy/paste feature of the app. I'd like to have comma separated coordinates to paste directly into a third party app (even google maps app), not just a web browser. Thank you!

From a military infantryman

Danny Brothers

I was a GPS operator in an IDF infantry platoon, and we had very complex GPS devices for the task. They were strictly numerical displays though, and a solid main screen was key. All I need is the UTM coords, as well as altitude and accuracy. This app does that perfectly on one screen. The only thing I'd suggest for improvement is an indicator for the number of satellites located.


John Spinks
1.6 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad 2 Wi-Fi + 3G, iPad Wi‑Fi + Cellular (3rd generation), iPad Wi-Fi + Cellular (4th generation), iPad mini Wi-Fi + Cellular, iPad Air Wi-Fi + Cellular, iPad mini 2 Wi-Fi + Cellular, iPad Air 2 Wi-Fi + Cellular, iPad mini 3 Wi-Fi + Cellular, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), 10.5-inch iPad Pro Wi‑Fi + Cellular, and iPad Wi-Fi + Cellular (6th generation).
Age Rating
Rated 4+
© Tomstrails


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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