# Red Grid Link — Offline MGRS Nav & Team Sync > Offline MGRS Nav & Team Sync (iPhone/iPad app by Estus Holdings LLC.) - Source: https://appshunter.io/ios/app/red-grid-link/id6760084718 (this page in markdown: same URL + `.md`) - Developer: [Estus Holdings LLC](https://appshunter.io/developer/1879926455) - Category: Navigation, Utilities - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 13.0 · 37 MB - Languages: English - Released: 2026-03-15 - Data updated: 2026-08-10 - User reviews in markdown: https://appshunter.io/ios/app/red-grid-link/id6760084718/reviews.md ## What is Red Grid Link? Your team. Your grid. No cell towers. No servers. No accounts. ATAK costs nothing but demands a TAK Server, Android-only deployment, and an IT team to run it. Red Grid Link delivers the core capabilities — encrypted team position sharing, MGRS-native navigation, offline maps, and tactical reports — on any iPhone, with zero infrastructure. Open the app. Start a session. Your team appears on the map. Built by an active duty Army officer for SAR teams, hunting parties, backcountry groups, and civilian units that need blue-force tracking without the bureaucracy. FIELD LINK — ENCRYPTED TEAM SYNC: Devices within Bluetooth range auto-discover each other and share encrypted positions, waypoints, and markers in real time. - AES-256-GCM encryption with ECDH P-256 ephemeral session keys - Live position updates every 5-30 seconds (battery-adaptive) - Cross-platform: iPhone and Android in the same session - Zero pairing, zero configuration, zero accounts - 2-device free tier, up to 8 devices with Pro+Link MGRS NAVIGATION: Live 10-digit Military Grid Reference System precision — the same coordinate system used by NATO forces worldwide. - 4/6/8/10-digit MGRS display (1-meter precision) - MGRS grid overlay at all zoom levels - Magnetic declination (WMM model) - NATO phonetic voice readout for hands-free grid calls OFFLINE MAPS: Download topographic regions over WiFi. Navigate completely offline. USGS Topo and OpenTopoMap coverage with MGRS grid rendering at every zoom level. EMERGENCY BEACON: One-tap SOS sends your GPS to every teammate. Full-screen alert with distance and bearing. Retransmits every 30 seconds until cancelled. TACTICAL MESSAGING: 8 pre-canned tactical messages plus free text. HELP, STOP, RALLY ON ME, ALL CLEAR, and more. One tap to send across the team. TEAM ROLES & COORDINATION: - Assign Lead, Scout, Medic, Comms, or custom roles with callsigns - Share waypoints with the team or keep them private - Draw boundaries and get alerted when anyone crosses them - Drop markers for hazards, rally points, objectives, or caches - Ghost markers show last-known positions when teammates go out of range 11 TACTICAL TOOLS: Dead Reckoning, Two-Point Resection, Pace Count, Back Azimuth, Coordinate Converter (MGRS / Lat-Lon / DMS / UTM / FixPhrase), Range Estimation, Slope Calculator, ETA / Speed, Magnetic Declination, Celestial Navigation, MGRS Precision Reference. AFTER-ACTION REPORTS: One-tap PDF export: map snapshot, mission timeline, per-member tracks, markers, team roster, and boundary events. 4 TACTICAL DISPLAY THEMES: Red Light (night vision safe), NVG Green (night observation device compatible), Day White (high visibility), and Blue Force (tactical blue display). 4 OPERATIONAL MODES: One engine, four presentation layers. Terminology and quick actions adapt to your mission: Search & Rescue, Backcountry, Hunting, or Training. ZERO FOOTPRINT PRIVACY: - No accounts, no sign-up, no login - No cloud, no servers, no analytics, no tracking, no ads - Location data stays on your device - Field Link data is ephemeral — nothing persists after the session ends - All team communication encrypted with AES-256-GCM PRICING: - Free: 4 modes, 2-device team sync, 1 map region, Red Light theme, 11 tools - Pro ($3.99/mo or $29.99/yr): All 4 themes, unlimited maps, After-Action Reports - Pro+Link ($5.99/mo or $44.99/yr): Pro + 8-device team sync - Lifetime ($149.99, one-time): All Pro+Link features forever Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage subscriptions in Settings > Apple ID > Subscriptions. Terms: https://redgridtactical.com/terms.html Privacy: https://redgridtactical.com/privacy.html ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Pro Annual | $29.99 | per year | | Pro Monthly | $3.99 | per month | | Pro+Link Monthly | $5.99 | per month | | Pro+Link Annual | $44.99 | per year | | Team Annual | $199.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Lifetime Pro+Link | $149.99 | one-time | ## Version history (last 5 releases) ### 1.6.1 — 2026-06-13 Red Grid Link v1.6.1: - NEW: 7-day free trial on Pro Annual — try everything before you subscribe. - Redesigned plans screen: clearer tiers and one-tap subscribe. - Session info now shows your plan's device capacity, with a clear upgrade path when your team outgrows it. - Field Link reliability fixes and interface polish. ### 1.5.6 — 2026-05-30 Search optimization and listing updates. Same Red Grid Link v1.5.5 app — improved discoverability on the App Store. ### 1.5.5 — 2026-05-04 Red Grid Link v1.5.5 — Reliability and trust: — Field Link sync is now end-to-end AES-256-GCM encrypted in PIN and QR sessions — After-Action Reports include the GPS route from your session — Map annotations now persist across app restarts — Wrong PIN or QR shows a clear rejection instead of an indefinite spinner — Session teardown is resilient to partial failures (sync engine no longer hangs) — Privacy policy refreshed to disclose optional crash diagnostics (PII off, GPS coordinates stripped) ### 1.3.1 — 2026-03-22 NEW IN V1.3 — TEAM FEATURES • Team roles: Lead, Scout, Medic, Comms, and custom roles with callsigns • Waypoint sharing: save personal waypoints or share with your team • Tap-to-place map annotations visible to all connected peers • Boundary alerts: Lead sets a geofence, get notified if anyone crosses it • Enhanced After Action Report with per-member tracks and boundary events • NATO phonetic voice callouts for hands-free position updates • Session export/import for backup and review • New marker categories: hazard, rally point, objective, cache • Annotation improvements: 6 colors, undo, and delete • 986 tests passing ### 1.3.0 — 2026-03-18 v1.3.0 — Localization Update - Added support for 30+ languages across the entire app - Improved UI text contrast and accessibility - Bug fixes and performance improvements ## More apps by Estus Holdings LLC - [Red Grid MGRS - Military GPS](https://appshunter.io/ios/app/red-grid-mgrs-military-gps/id6759629554) - [Just Start: ADHD Focus Timer](https://appshunter.io/ios/app/just-start-adhd-focus-timer/id6760567262) All apps by Estus Holdings LLC: https://appshunter.io/developer/1879926455 ## Related topics [red grid mgrs](https://appshunter.io/ios/topics/red-grid-mgrs) · [genasys protect](https://appshunter.io/ios/topics/genasys-protect) · [gotenna](https://appshunter.io/ios/topics/gotenna) --- *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 2026-08-10.*