# GridNav - MGRS Land Nav GPS — UTM, DMS, SAR Topo Offline Map > Offline MGRS, UTM, and lat-lon land navigation tool with map display. (iPhone/iPad app by BigBalli Consulting llc.) - Source: https://appshunter.io/ios/app/gridnav-mgrs-land-nav-gps/id6768683465 (this page in markdown: same URL + `.md`) - Developer: [BigBalli Consulting llc](https://appshunter.io/developer/363765325) - Category: Navigation, Utilities - Price: Free with in-app purchases - Rating: 5.00/5 from 4 App Store ratings - Age rating: 4+ - Requires: iOS 18.0 · 13 MB - Languages: American English - Released: 2026-05-13 - Data updated: 2026-09-08 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/gridnav-mgrs-land-nav-gps/id6768683465/reviews.md ## What is GridNav? 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. ## Key features - Real-time coordinate display (MGRS, UTM, lat-lon) - Paste and plot grid coordinates on map - Offline map downloads (OpenStreetMap, USGS topo) - Adjustable coordinate precision and display order - Waypoint saving and navigation - Red on black night mode - One-handed operation and glove-friendly design ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Pro | $12.99 | one-time | ## Frequently asked questions about GridNav ### 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. ## Version history (last 5 releases) ### 2.3 — 2026-09-05 GridNav now has an Apple Watch app. Your current MGRS grid, with its accuracy in metres, and the bearing and distance to the waypoint you have armed, all on your wrist. The waypoint you are heading for sits on the watch face as a complication. It runs on the watch's own GPS and computes the grid with the same engine the iPhone uses, so it keeps working with your phone in a pack or out of range. Waypoints come across from your iPhone; you still create and edit them there, where there is a map and a keyboard. ### 2.2 — 2026-08-31 Improved & Fixed - Now works on iPhones running iOS 18 and later, so more devices are supported. ### 2.1 — 2026-08-20 Improved & Fixed - Now works on iPhones running iOS 18 and later, so more devices are supported. ### 2.0 — 2026-07-31 Improved & Fixed - Fixed a crash that could occur when downloading offline map areas. - Unlock screen now loads more reliably on slow or spotty connections, with a Retry option if it doesn't load the first time. ### 1.9 — 2026-07-12 - Find your saved waypoints instantly with Spotlight search from your home screen. ## More apps by BigBalli Consulting llc - [MyLyrics - Find Song by Lyrics](https://appshunter.io/ios/app/mylyrics-find-song-by-lyrics/id393781482) - [PV Master - Solar Panel System](https://appshunter.io/ios/app/pv-master-solar-panel-system/id396636193) - [My Book List - Library Tracker](https://appshunter.io/ios/app/my-book-list-library-tracker/id443391908) - [Contact Exporter - Excel CSV](https://appshunter.io/ios/app/contact-exporter-excel-csv/id468341181) - [Silver Hallmarks - Maker Marks](https://appshunter.io/ios/app/silver-hallmarks-maker-marks/id514531677) - [Fancy QR - AI Code Generator](https://appshunter.io/ios/app/fancy-qr-ai-code-generator/id552823669) All apps by BigBalli Consulting llc: https://appshunter.io/developer/363765325 ## Related topics [tactical nav](https://appshunter.io/ios/topics/tactical-nav) · [land nav](https://appshunter.io/ios/topics/land-nav) · [land nav military](https://appshunter.io/ios/topics/land-nav-military) · [land navigation military](https://appshunter.io/ios/topics/land-navigation-military) · [land navigation army](https://appshunter.io/ios/topics/land-navigation-army) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-08.*