GridNav - MGRS Land Nav GPS
Compass, UTM, Topo Offline Map
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Paste a grid, see it on the map in seconds. MGRS, UTM, lat-lon the moment GPS locks. Full offline maps and one-tap waypoints. Works with zero signal.
Paste a grid. See it on the map in seconds. GridNav puts MGRS, UTM, and lat-lon on screen the moment GPS locks, and works with zero signal.
Built for soldiers learning 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 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 USGS topo built
in.
• Read the grid without squinting. Clean MGRS overlay with labels at every zoom level. Adjustable opacity so the map stays useful underneath.
• Save a spot with one tap. Drop a waypoint at your current position. Add a label, pick a color, tap to navigate back.
• 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. Battery polling tuned for hours in the field.
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-time purchase unlocks offline map
downloads and unlimited waypoints. No subscription.
Get GridNav. Then go.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Improved & Fixed
- Fixed a blank map at startup so it loads correctly every time
- The map now opens at a helpful street-level view instead of zoomed all the way in
- Map detail now reloads automatically after a brief connection hiccup
The developer, BigBalli Consulting llc, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- BigBalli Consulting llc
- Size
- 10.7 MB
- Category
- Navigation
- Compatibility
Requires iOS 26.4 or later.
- iPhone
Requires iOS 26.4 or later. - iPad
Requires iPadOS 26.4 or later. - Mac
Requires macOS 26.4 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.4 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro $12.99
- Copyright
- © 2026, BigBalli Consulting