TerraGrid: MGRS Tactical GPS

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: WGS84, ETRS89, ED50, NAD27, NAD83, OSGB36, Tokyo, Pulkovo 1942, DHDN, Monte Mario, GGRS87, RT90, KKJ, S-JTSK, HD72, CH1903+ and more — 27 datums that match the paper maps in your pocket. • National grids by name: PUWG 1992/2000, Gauß-Krüger, Gauss-Boaga, TUREF, Lambert 93, SWEREF 99, ETRS-TM35FIN, ΕΓΣΑ87, PT-TM06, Lambert 2008, RD, S-JTSK, EOV, Stereo 70, LV95, HTRS96/TM, D96/TM, TWD97 TM2, VN-2000, RT90, KKJ, NGO 1948 and Japan's plane rectangular systems. • 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 — 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, barometric and GPS 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 pause, Auto-Pause and moving time, 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: live positions and shared waypoints and routes on the map, 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, and waypoints or routes only when you share them — always 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