Notch

Code to Muscle

In-app purchases

About this app

Stop forgetting to practice. Start notching reps.

Notch is the only Watch-first app built for Grease the Groove training. The proven method of doing small sets throughout your day to build strength without burning out.

Raise your wrist. Tap. Hang. Tap when done. That's it.

Most fitness apps are built phone-first and bolted onto your watch as an afterthought. Notch is the opposite. The Wear OS app is the product. The phone app is just where your history lives.

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WHAT IS GREASE THE GROOVE?
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Coined by strength coach Pavel Tsatsouline, Grease the Groove (GTG) means doing frequent, sub-maximal sets of one movement throughout the day. Never to failure, always fresh. It's how you go from 3 pull-ups to 15. It's how desk workers build dead hangs into their commute. It's how you actually get stronger without a gym membership.

The catch: you have to remember to do the sets. That's where Notch comes in.

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ON YOUR WATCH
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• Timer-based logging for dead hangs, planks, L-sits, and any hold exercise
• Rep-based logging for pull-ups, push-ups, squats. Tap to confirm a set
• Live countdown with haptic ticks and a "go" buzz at the goal
• Optional heart rate capture during holds (gracefully skipped on watches without an HR sensor)
• Today count and streak visible the moment you raise your wrist
• Tile (Pro). Glance your progress without opening the app
• Daily reminder if you haven't logged anything by your chosen time

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ON YOUR PHONE (companion)
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• History view of every set you've ever logged
• Progression charts so you can see strength build over weeks
• Personal bests and longest streak (Pro)
• Settings, exercise library, daily reminder time
• Wearable Data Layer sync. Your watch and phone stay in lockstep

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FREE vs PRO
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Free forever:
• Core watch logging (timer + reps)
• Today's set count
• Basic streak
• Up to 3 exercises

Pro, $4.99 one-time unlock:
• Full history with progression charts
• Personal bests and longest streak
• Tile for instant glance
• Unlimited exercises

No subscription. No ads. No upsells. No data sold. You buy it once and you own it.

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PRIVACY
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Your sets, heart rate samples, and streaks live in a local Room database on your devices. No third-party analytics. No ad networks. No tracking SDKs. Nothing leaves your phone unless you opt into a sync (Hevy Pro sync is coming soon).

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WHO IT'S FOR
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• Climbers training dead hangs between meetings
• Desk workers building plank time
• Calisthenics nerds running pull-up GTG protocols
• Anyone who wants to get stronger in 30 seconds at a time
• People tired of fitness apps that bury logging behind 4 taps

If you've ever stuck a pull-up bar in a doorway and forgotten about it for three weeks, Notch is for you.

Built by one developer in public. Watch-first, forever.

What’s new

Notch v1.0: Tap. Hang. Tap.

The watch-first Grease the Groove timer ships. Log timed holds and rep sets from your wrist, see history and progression charts on your phone, optional $4.99 unlock for Pro features.