TerraGemma: An Offline Edge AI Trail Companion That Tells You to Put Your Phone Away
This is a submission for the Hacktoberfest Open-Source AI Challenge Week 1: Touch Grass What I Built Modern hiking and outdoor apps suffer from a tragic paradox: they encourage you to stare down at a glowing screen while walking through ancient forests and alpine peaks. Turn-by-turn navigation chimes buzz on your wrist every 30 seconds. Hikers miss the rustle of leaves, the scent of damp hemlock…
This submission is for the Hacktoberfest Open-Source AI Challenge Week 1: Touch Grass. The project is called TerraGemma, an offline-first backcountry expedition companion powered by Google's open-weight Gemma 3 running 100% locally on-device. The core philosophy of TerraGemma is to keep hikers focused on their surroundings rather than staring at their phone screens.
The app uses NOAA solar engine and Naismith Turnaround Math to calculate the exact sunset, golden hour, and turnaround deadline, ensuring hikers never get caught on the mountain after dark. TerraGemma also provides an Eyes-Up, Screen-Down Sensory Navigation Guide, using physical cues like listening for feeder streams and feeling wind shifts to navigate by natural awareness.
Another key feature is the Offline Wilderness First Responder (WFR) Triage, which provides immediate triage for various emergencies such as hypothermia, heat illness, venomous snakebites, anaphylaxis, and sprains when zero cellular signal is present. The app also offers a Field Flora, Fauna & Toxic Lookalike Protection, identifying dangerous lookalikes and offering mindful Touch Grass sensory missions.
To use TerraGemma, hikers can plan their route with astronomical precision, receive an audio briefing to listen to at the trailhead, and access an offline emergency first responder triage when needed. The code for TerraGemma is open-source under the MIT License on GitHub.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
