GridNav: MGRS Land Navigation

Paste a grid. See it on the map in seconds. GridNav puts MGRS coordinates, UTM and lat/lon on screen the moment GPS locks, and works with zero signal.

Built for soldiers learning military land navigation, ROTC and OCS candidates, search and rescue volunteers, wildland fire crews, law enforcement tactical teams, and backcountry hunters who need a grid to land on a map without fighting their phone.

WHY GRIDNAV

Read your position at a glance. Current location in MGRS, UTM and lat/lon, in large high contrast type. Pick which formats show and in what order. Switch precision from 4 to 10 digits.

Drop a pasted grid onto the map in one step. Paste an MGRS string from radio chatter, a text, or a notebook. The pin lands, the compass bearing shows, the distance counts up from where you stand.

Navigate where there is no signal. Download regions ahead of time, choose your detail level, and move with full offline maps. OpenStreetMap and topographic data built in.

Read the grid without squinting. A clean MGRS overlay that steps its spacing with the zoom, from 100 m squares up to the zone designators.

Save a spot with one tap. Drop a waypoint at your current position, add a label, pick a colour, tap to navigate back.

Send your position to dispatch. One tap builds a share card with the map, the grid, UTM and lat/lon, your accuracy and the time. It is drawn on the phone from maps you already have, so it works with no signal.

Keep your eyes adjusted. Red on black night mode for long movements after dark.

Use it with one hand under stress. Big tap targets, low cognitive load, fast even with gloves on.

HOW IT WORKS

1. Open GridNav. Your current grid is on screen the moment GPS locks.
2. Paste a grid into the input bar. The pin drops and the bearing shows.
3. Move toward it. Switch coordinate formats with one tap when you need to call it in.

WHO IT IS FOR

Soldiers and cadets running land navigation courses. ROTC and OCS candidates preparing for nav tests. Search and rescue volunteers reporting grids back to coordinators. Wildland firefighters calling positions to dispatch. Hunters working public land where lat/lon and waypoints matter more than turn by turn.

WHAT IT IS NOT

Team chat, mesh networking, route collaboration and tactical platform creep stay out of the build. GridNav holds to one job: working a grid coordinate on a map, fast, with or without signal.

PRICING

Free to try. Drop up to three waypoints, read your live coordinates, paste grids and inspect the map with no time limit. One payment unlocks offline map downloads and unlimited waypoints. No subscription, no ads.

The unlock is a single purchase billed to your Google Play account. It never renews.

Map data: MapTiler and OpenStreetMap contributors.

Privacy Policy: https://gridnav.app/privacy
Terms of Use: https://gridnav.app/terms

Recent changes:
Share your position as a picture card. The map now draws reliably, large offline region downloads ask for confirmation, and the privacy and terms links on the upgrade screen work again.