How is Red Grid Link different from ATAK?

Red Grid Link is a lightweight ATAK alternative. It works on both iOS and Android (ATAK is Android-only), requires no TAK Server, sets up in 30 seconds, and is designed for civilian SAR, hunting, and backcountry teams rather than military operations.

Can I use Red Grid Link for hunting?

Yes. Hunting mode adapts terminology and icons for hunting operations, including stand locations and party tracking.

Red Grid Link — Encrypted Team Coordination Over Bluetooth

Built for Teams Beyond Cell Service

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Field Link — Encrypted Team Sync

Auto-discover teammates via BLE + WiFi Direct. AES-256-GCM encrypted with ECDH ephemeral keys. No servers, no pairing, no configuration.

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Offline MGRS Maps

Download USGS Topo and OpenTopoMap packs. MGRS grid overlay at all zoom levels. Full offline operation with MBTiles.

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11 Tactical Tools

Dead reckoning, resection, pace count, bearing calculator, coordinate converter, range estimation, slope calculator, and more.

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4 Operational Modes

SAR, Backcountry, Hunting, Training. UI adapts terminology, icons, and quick actions to your mission context.

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Ghost Markers & Time-Decay

See last-known positions when teammates go out of range. Opacity fades over 30 minutes with velocity vectors.

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Zero Footprint Privacy

No accounts, no cloud, no analytics. Field Link data is ephemeral. Location data never leaves your device.

Red Grid Link vs. The Competition

Feature	Red Grid Link	ATAK	goTenna	Garmin inReach
Price	Free / $5.99/mo	Free (gov)	$179+ hardware	$349+ hardware
Requires server	✗ No	Yes (TAK Server)	No	Satellite network
Cross-platform	✓ iOS + Android	Android only	iOS + Android	Proprietary
Encryption	✓ AES-256-GCM	TLS	AES-256	Proprietary
MGRS native	✓ Yes	✓ Yes	✗ No	✗ No
Offline maps	✓ Yes (MBTiles)	✓ Yes	✗ No	Limited
Max team size	8 (Pro+Link)	Unlimited	6	Unlimited
Accounts required	✗ No	Yes	Yes	Yes

Zero Footprint Architecture

Red Grid Link collects no data. Your position never touches a server. Field Link sessions are ephemeral.

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AES-256-GCM Military-grade encryption on every packet.

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No Accounts No sign-up. No login. No passwords.

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No Cloud / No Servers Nothing leaves your device.

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Ephemeral Sessions Field Link data disappears when you disconnect.

Pricing

Free

Forever

All 4 operational modes
2-device Field Link
1 offline map region
11 tactical tools
Red Light theme

Pro

$3.99/mo

or $29.99/year

All 4 display themes
Unlimited map downloads
AAR export
2-device Field Link

Frequently Asked Questions

How does Field Link work?

Field Link uses Bluetooth Low Energy and WiFi Direct to auto-discover nearby teammates and share encrypted position data. No pairing, no configuration. Turn it on and your team appears on the map. All communication is AES-256-GCM encrypted with ECDH ephemeral session keys.

Does it work without cell service?

Yes. Red Grid Link uses GPS satellites for positioning and Bluetooth for team sync. No cell towers, no WiFi, no internet required. Download maps ahead of time for full offline operation.

What data do you collect?

None. No accounts, no analytics, no cloud sync, no tracking, no ads. Location data stays on your device. Field Link session data is ephemeral and disappears when the session ends.

How is this different from ATAK?

Red Grid Link is lighter, cross-platform (iOS + Android), requires no TAK Server, and is designed for civilian teams. ATAK is a powerful military tool but requires Android, server infrastructure, and significant setup time. Red Grid Link gets your team on the map in 30 seconds.

Can I use it for hunting?

Yes. Hunting mode adapts the UI with hunting-specific terminology, stand locations, and party tracking. Share positions with your hunting party over Bluetooth without cell service.

When is Android coming?

Red Grid Link is built with Flutter, a cross-platform framework. The Android build is functional and launch is coming soon. Star the GitHub repo to stay updated.