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)
• 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.

What’s New

Version 3.0.0

Updated to support recent devices and iOS 13.

Ratings and Reviews

4.7 out of 5
3 Ratings

3 Ratings

Kid Greenough ,

Simple, quick and accurate

Allows for various units and settings as well as exporting info. I like being able to simply swipe to access either UTM or Lat/Long coordinates.

Bear Gttthhy ,

GPS User

Nice app. I use it all the time for accurate locaduon!

Zrig ,

Excellent for volunteer SAR work.

I have been using this free app for quite some time in the field during search operations. It is simple and to the point when all you need is a set of coordinated to relay to command or arrange pick by helicopter. Sharing your location via text when radio comms fails is a significant plus for searcher safety. I did prefer the previous version that had both coordinate systems on one screen, but hey, how hard is it really to swipe a screen. On a side note. I still carry a dedicated gps unit as the antenna is far superior to an iPhone and a buttery change is possible after several hours or days in the bush.


John Spinks
11 MB

Requires iOS 11.0 or later. Compatible with iPhone, 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, iPad Pro (12.9‑inch) Wi‑Fi + Cellular, iPad Pro (9.7‑inch) Wi‑Fi + Cellular, iPad (5th generation) Wi‑Fi + Cellular, iPad Pro (12.9‑inch) (2nd generation) Wi‑Fi + Cellular, iPad Pro (10.5‑inch) Wi‑Fi + Cellular, iPad Wi‑Fi + Cellular (6th generation), iPad Pro (11‑inch) Wi‑Fi + Cellular, iPad Pro (12.9‑inch) (3rd generation) Wi‑Fi + Cellular, iPad mini (5th generation) Wi‑Fi + Cellular, iPad Air (3rd generation) Wi‑Fi + Cellular, iPad (7th generation) Wi‑Fi + Cellular, iPad Pro (11‑inch) (2nd generation) Wi‑Fi + Cellular, and iPad Pro (12.9‑inch) (4th generation) Wi‑Fi + Cellular.



Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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