Bite less. Grow.

StopChomp watches through the front camera and beeps the moment a hand drifts to your mouth. Detection runs entirely on device, your data never leaves your machine.

Google Play coming soon

windows · mac · iphone — planned

No. 01 · the story

Welcome to Gnashville.

A little town destined for greatness. It has a guardian Kaiju: Chomp. Very friendly, very well behaved and, unfortunately, very impressionable.

When Chomp sees you bite your nails, he copies you. Right on top of Gnashville.

Keep your hands where they belong and Gnashville thrives. Slip up and Chomp goes on a rampage and the people of Gnashville will have to rebuild.

Every session starts with a fresh doodle town to set up on your desk and keep you company as you work. Watch as Gnashville grows from a simple campsight to a bustling metropolis (assuming you can keep Chomp in check...)

No. 02 · the mechanics

Prop it up. Let it run.

Any angle works

Unlike other habit monitoring apps, StopChomp is designed to work as a third-screen desktop companion. Grab an old phone or table and place it anywhere that has a view of your head and shoulders. You can even configure Chomp to keep an eye on you when the screen is off!

Subtle alerts

Stop Chomp can be configured to issue a quiet beep or buzz whenever it detects you biting your nails or touching your face. It's designed to help you turn an unconscious habit into a conscious one.

Stats that hold up

Keep track of your habit-breaking journey! Stats are tracked per session and over the long term. StopChomp normalizes your statistics to the time that Chomp can actually see you, so you won't mess up stat tracking if you wander away from your desk or pause the app for a few hours.

No. 03 · the machinery

A camera you already own.

No notebooks, no new hardware

Most nailbiting habit tools are wearable devices or paper tally sheets. Chomp turns any old phone or tablet into the world's best habit coach. Just point the camera in the right direction and listen for the alerts, Chomp will handle the rest.

Completely offline

StopChomp uses two ultra small and efficient machine vision models that can run on virtually any device. The AI detection doesn't need an internet connection and no camera data ever leaves your device - we don't even have servers to receive it! 100% private.

Works from any angle

Other camera-based tracking apps struggle with off angles. We've designed StopChomp to work wherever you set it up. Close or far away. Straight on or to the side. No need to lock up your main webcam for this.

Made for drawer phones

Built to runs on Android 7.0 — phones from 2016. Run the Gnashville simulation on your desk and turn that old phone gathering dust into both a cute desk toy and a powerful habit coach.

No. 04 · privacy

Your camera feed stays yours.

Frames are analyzed in memory and immediately discarded. No photos or video are ever stored or sent anywhere — there is no server to send them to.

data collected: none · ads & tracking SDKs: none · account: none

Read the full privacy policy

No. 05 · the deal

Buy it once.

10-minute sessions are always free.

You can use StopChomp forever for focused 10 minute sessions. A single one-time purchase unlocks unlimited length sessions. No subscription, no hidden purchases, no ads. Just great software at a great price.