TrailLens Audio app uses local AI for nature identification, then prompts phone-free observation.

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TrailLens Audio is a mobile app created for a hackathon challenge. It allows hikers to take a photo of a natural specimen for local AI-powered identification and an audio guide. A key feature called Pocket Quest then gives users a 20-second observation prompt and encourages them to put their phones away. The app uses local models like Gemma 3 to work offline and protect privacy, avoiding unreliable cloud services in nature. It is intentionally cautious, withholding identification if a photo is unclear and never suggesting harmful interactions.

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