GridNav - MGRS Land Nav GPS
UTM, DMS, SAR Topo Offline Map
About
Easily convert and display MGRS, UTM, and lat-lon coordinates on a map, even without a signal. This app is designed for quick grid-to-map conversion and navigation, with features like offline maps and a night mode.
What's New in GridNav
1.9
July 12, 2026
- Find your saved waypoints instantly with Spotlight search from your home screen.
In-App Purchases
$12.99
Pro
Unlimited access to all premium features.
Developer apps
FAQ
What coordinate systems does GridNav support?
GridNav supports MGRS, UTM, and lat-lon coordinate systems. You can choose which formats to display and in what order, with precision adjustable from 4 to 10 digits.
Can I use GridNav without a cell signal?
Yes, GridNav is designed to work with zero signal. You can download regions ahead of time for full offline map functionality, utilizing OpenStreetMap and USGS topo maps.
How does GridNav handle pasting coordinates?
You can paste an MGRS string from radio chatter, text, or a notebook directly into GridNav. The pin will drop on the map, and the bearing and distance will be calculated from your current position.
What is the pricing for GridNav?
GridNav is free to try, allowing you to drop up to three waypoints, read live coordinates, paste grids, and inspect the map without time limits. A one-time purchase unlocks offline map downloads and unlimited waypoints; there is no subscription.
Does GridNav have a night mode?
Yes, GridNav features a red on black night mode, which is beneficial for maintaining eye adjustment during long movements after dark.
What devices is GridNav compatible with?
GridNav is compatible with iPhone and iPad devices.
How often is GridNav updated?
The latest version of GridNav is 1.5, and it was last updated on June 20, 2026. Updates are released to improve functionality and reliability.
What is the age rating for GridNav?
GridNav has an age rating of 4+, making it suitable for a wide range of users.