# Tomstrails GPS Duo

> Worldwide Coordinate Formats

Canonical page: [https://chrome-stats.com/d/id425642315](https://chrome-stats.com/d/id425642315)

## Overview

- **ID:** `id425642315`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Tomstrails.com
- **Category:** Navigation
- **Rating:** 4.60 / 5 (145 ratings)
- **Version:** 3.0.0
- **Last updated:** 2019-12-27
- **First published:** 2011-03-20
- **Size:** 10 MB
- **Data as of:** 2026-09-21
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/tomstrails-gps-duo/id425642315)
- **Website:** [http://www.tomstrails.com](http://www.tomstrails.com/)
- **Privacy policy:** [http://tomstrails.com/privacy.html](http://tomstrails.com/privacy.html)

## Description

Tomstrails GPS Duo provides a clear display of your position in multiple world coordinate formats, including British Grid, Irish Grid, MGRS, UTM (WGS-84/ED50), and latitude/longitude in decimal and sexagesimal notation. It also optimizes update frequency to extend battery life and keeps GPS from running in the background, with a crisp, high-contrast screen showing simultaneous grid formats to assist emergency responders.

Designed for field use, the extension prioritizes battery efficiency while delivering precise, readable coordinates for quick reference and coordination across teams.

## Rankings

- #118,275 — Overall

## Review summary

Tomstrails GPS Duo is an easy-to-use, focused tool praised for its large, readable coordinates and accurate readings across formats such as UTM, latitude/longitude, MGRS, and grid. Reviewers value its simple interface, quick access to coordinates, and easy sharing. Some users desire NAD83 support or the ability to change the map datum, and a few note missing watch compatibility or copy/paste formatting options. Overall, the app is valued for clarity, speed, and a no-frudge coordinate-display experience.

### Pros

- Easy to use with a clean, straightforward interface
- Large, readable coordinate display
- Accurate GPS readings across multiple formats
- Supports multiple coordinate systems (UTM, Lat/Lon, MGRS, grid coordinates)
- Focused one-purpose app that delivers quick coordinates and easy sharing

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Source: [Chrome-Stats](https://chrome-stats.com/d/id425642315)