TerraGrid: MGRS Tactical GPS
Land Nav, UTM & Grid Compass
$9.99 · Designed for iPad. Not verified for macOS.
TerraGrid is precision land navigation for soldiers, hunters, search & rescue teams, surveyors and serious outdoors people. Your grid, your compass and your waypoints, working 100% offline.
WHAT'S DIFFERENT
• Real datum support: ED50, NAD27, NAD83, OSGB36, Tokyo, Pulkovo 1942 and custom 3/7-parameter transforms, plus local 3° Transverse Mercator grids that match legacy 1:25,000 map sheets.
• On-device AI field assistant (iOS 26+): "drop a rally point 100 m north of me", fully offline.
• Apple Watch, AR finder and Live Activities: your grid on your wrist, waypoints in your camera view, range on your lock screen.
COORDINATES & DATUMS
— MGRS, UTM, USNG, DD, DDM, DMS, GEOREF and Maidenhead, from 10 km to 1 m precision
— National grids by name: PUWG 1992/2000, Gauß-Krüger, Gauss-Boaga, TUREF, Lambert 93, SWEREF 99, ETRS-TM35FIN, ΕΓΣΑ87, PT-TM06, Lambert 2008 and Japan's plane rectangular systems
— Instant converter between every format and datum, with copy and share
— Coordinate OCR: point the camera at a paper map or a written grid and import it
MAP & POSITION
— Zoom-adaptive MGRS grid overlay with 100 km squares, zone boundaries and labels
— Big-type Position screen: date-time group (local + Zulu), grid, altitude MSL/HAE, accuracy, position averaging with CEP
— Offline map regions: download an area once, navigate without signal
WAYPOINTS, ROUTES & TRACKS
— Tactical waypoints with NATO-style symbols, folders and layers
— Routes with leg tables, terrain-aware time estimates, elevation profile and a printable route card PDF
— Track recording with elevation profile and backtrack
— GPX, KML and CSV import & export; QR hand-off between devices
COMPASS & FIELD TOOLS
— True, magnetic and grid north compass with offline WMM2025 declination, bearing lock and mils
— BMNT/EENT twilight, sun & moon, pace-count dead reckoning
— Grid-stamped photos with EXIF
— Voice guidance and red/green night mode
TEAM & SYSTEM
— Serverless team sharing over your own iCloud: no accounts, no servers
— Siri: "What's my grid?", home and lock screen widgets, Dynamic Island
— Apple Watch app with grid, compass and mark-position complications
PRIVACY
100% offline. Zero telemetry. Your location is shared only when you turn on team broadcasting, over your own iCloud.
One-time purchase. No subscriptions, no ads, no accounts.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://enfurbay.github.io/terragrid-site/privacy.html
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• National grids by name: PUWG 1992/2000, Gauß-Krüger, Gauss-Boaga, TUREF, Lambert 93, SWEREF 99, ETRS-TM35FIN, ΕΓΣΑ87, PT-TM06, Lambert 2008 and Japan's plane rectangular systems (Settings › Coordinates).
• Navigation keeps running in the background and on the lock screen; bearings follow your north reference and mils setting.
• Coordinate input (keypad, paste, OCR, Siri) honours the selected datum.
• Fixes across routes, track recording, team sharing, Apple Watch and imports; the map crosshair sits exactly on the coordinate.
The developer, Enes Furkan Bayram, 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
- Enes Furkan Bayram
- Size
- 15.3 MB
- Category
- Navigation
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
English and 11 more
- English, Arabic, French, German, Italian, Japanese, Korean, Polish, Spanish, Thai, Turkish, Ukrainian
- Age Rating
4+
- 4+
- Copyright
- © 2026 EFB Apps
