A desktop app that blocks work when you bite your nails

In plain words

This desktop application monitors users via webcam and blocks work activity when it detects nail biting. Built as a behavioral intervention tool, it uses computer vision to identify the habit and automatically pause access to applications. The app is designed for people struggling with nail biting who want to break the habit through automated deterrence while working at their desk.

written from the facts on this page · September 2026

From the sources

Detects when your fingers are near your mouth and reminds you to stop. Built with Tauri + React + MediaPipe. - cacoos/trackhands

TrackHands is a cross-platform desktop app that detects when your fingers are near your mouth and reminds you to stop. Download the latest release for your platform from the Releases page. Since the app is not signed with an Apple Developer certificate, macOS may show a warning that the app "is damaged and can't be opened." To fix this, run the following command in Terminal after installing: xattr -cr /Applications/TrackHands.app Building from Source Clone the repository: git clone https://github.com/cacoos/trackhands.git cd trackhands Install dependencies: pnpm tauri build The built application will be in src-tauri/target/release/bundle/from github.com

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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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  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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