Stop Biting
End Nail Biting, AI Tracks, Predicts, and Stops the Habit
Stop Biting launched on April 22, 2026 with 2 votes, #4,561 of 21,248 launches that month.
What it does
Break the nail biting habit with on-device AI detection. Uses your webcam to catch onychophagia in real-time — 100% private, no data leaves your device. Science-backed habit reversal techniques included.
Stop Biting uses your webcam and on-device AI to detect nail biting in real time. The moment your hand moves toward your mouth, an audible alarm fires — catching the automatic episodes you never notice. All detection runs locally via MediaPipe and WebAssembly: no camera data ever leaves your device. Run the real nail biting detector on your own camera for 60 seconds — no account, no signup. The AI models download once (about 20 MB) and then everything runs on your device: open your browser's network panel and you'll see zero requests while it is watching. Nothing is uploaded and nothing is saved. Open the app in your browser (or the macOS/Windows desktop app), grant camera access, and work…from stopbiting.today
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- SNStop nail-biting with your MacBook's webcam2023 · handsdown.kianpak.com · ▲21
Hey HN! I made this app because I bite my nails way too much while I code It uses Mac's Vision library to track the location of your hands and mouth via the webcam. Then when it catches you biting, it temporarily covers your screen with a big obnoxious warning. You have to stop biting if you want to continue seeing anything. It's helped me a lot, so I hope it can help other nail-biters here :)
A desktop app that blocks work when you bite your nailsJan 2026 · github.com · ▲16Saw this repo: https://github.com/tldev/posturr and wanted to share my solution to avoid nail biting :)
stopnailbiting.app2025 · stopnailbiting.app · ▲6I recently switched from hybrid home office to being fully remote. I realized I'd developed a new habit: biting my nails, something I never did in the office. I've built a small utility app that lives in your macOS menu bar and uses the webcam to detect when you start biting your nails or touching your face. All processing happens on-device, and no data ever leaves it. Detection's frames per second and some overlay styles can be customized.
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