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.

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