TrackHands

What it does

TrackHands uses your 📸 camera to help you build better habits with a gentle annoying reminder whenever your 🖐️ hands move towards your mouth.

TrackHands uses AI to detect when your hands get too close to your mouth and gently reminds you to stop. Break the habit with real-time hand tracking. Free and open source.

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  Hands Off2025 · handsoffapp.com · ▲195

  Stop nail biting and other bfrbs with AI

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  Stop 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 :)

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  Hands Down2023 · ▲82

  Stop nail-biting while you work

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  stopnailbiting.app2025 · stopnailbiting.app · ▲6

  I 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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  Life & fun · 2025 · th0mas.nl

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  I originally built this app to organize and reuse interesting React + Tailwind components I came across on Twitter, inspired by the shadcn/ui approach. Later, a friend started contributing their own components, and it got me thinking—this could grow into something bigger, like an NPM for design engineers to share and use components. Would love to hear your thoughts!

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