DirtOS is GPS built specifically for off-road — racers, chasers, rally teams, overlanders, UTV crews etc. Not a generic outdoor app with a "trail mode" tacked on. Built by people who actually drive in the dirt.

RALLY + RACING

- Pacenote Mode with 1-6 severity + tightens/opens turn classification.
- Auto-Detect Turns from any GPX with severity-tagged waypoints.
- Countdown Callouts: "500, 400, 300, 200, 100, here."
- 4-Zone Speed-Based Zoom camera + Loop Mode with lap detection.
- 28-Language Turn Audio, on-device, fully offline.

QUICK KEYS

53 customizable one-tap buttons for dropping waypoints at speed. Bluetooth keyboard support for gloved race conditions — mount a keyboard on the dash and hit one key to mark a hazard at 80 mph. Import your own PNG icons.

GROUP RIDE, CHAT + PUSH-TO-TALK

- Live crew tracking with names and speeds.
- In-app chat with presets, voice-to-text, optional TTS announcement.
- NEW: Push-to-Talk voice messages. Pair a BLE PTT button (Herda, Zello-compatible) and hold to broadcast to every racer in the group.
- Offline tracking via Meshtastic LoRa — share location with zero cell service. T1000-E, Wio Tracker, Heltec supported.
- Public + private + persistent multi-day groups.

RACE ORGANIZER PORTAL

NEW: dirtos.io/org — web console for race directors. Import a master route, broadcast text or voice to every registered racer. All updates land instantly in the app.

TRAIL FINDER + CUSTOM ROUTING

- Trail Finder — drop pins on satellite imagery, DirtOS traces unmapped desert roads between them.
- Custom GraphHopper routing, 116M edges, 9 vehicle profiles from dirt bike to full-size 4x4.
- Universal Go To — tap any address, POI, coordinate, or group member.
- Automatic gas stop insertion based on fuel range you set. Section Delete + Connect for field edits.

OFFLINE MAPS

- Route Corridor Download follows your actual track shape — 5-10x fewer tiles than a bounding box.
- Silent Zoom Clamp so the map never goes white when cell drops.
- Zombie-Cell Detection falls back to your downloaded zoom automatically when tiles start failing.
- Region Download with polygon selection. Storage Manager with per-region size + zoom range.

TOUR MODE + WEATHER

- Tour Mode — Wikipedia landmarks narrated as you drive.
- NEXRAD radar overlay + NWS forecast + severe alerts + precipitation warnings 20 miles ahead.

ROUTE MANAGEMENT

- Merge Items combines routes, tracks, or runs.
- Record Mode, 3D Flyover Preview, Photo Waypoints Overlay (iOS only), Cloud Sync.
- USFS + BLM Trail Overlay filtered by vehicle type.

RACING ESSENTIALS

Next 3 Waypoints Display, Compass Pointer, Off-Course Warnings, Speed Zones with over-speed alerts, Chase Cam (double-tap Find Me for heading-up view)

WHY THIS EXISTS

Built by people who actually go offroad. Interface works with gloves, in sunlight, at speed. Turn detection knows the difference between a note at a gate and a critical Y-junction. Every feature exists because someone needed it in the dirt.

PRICING

Free to try. DirtOS Pro $49.99/year with 14-day trial — unlocks Follow Mode, audio, Quick Keys, group ride + chat + PTT, cloud sync, weather, tour mode, offline maps, and exports.

Who could use?
Off-road racers pre-running Baja, BITD, SCORE, NORRA. Rally teams. Overlanders. UTV crews on BLM + USFS land. Trail scouts. Search-and-rescue.

DISCLAIMER: Off-road and recreational use only. GPS can be inaccurate; routes may contain errors. Always verify and drive according to conditions. Full terms at dirtos.io/terms.html.