Notch: GTG Watch Timer
GTG strength on your wrist
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
Tap. Hang. Tap. The Watch-first Grease the Groove timer. Build strength in 30-second sets throughout your day. No subscription. $4.99 unlocks history.
Stop forgetting to practice. Start notching reps.
Notch is the 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.
WHAT IS GREASE THE GROOVE?
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 hang strength into their commute. It's how you get stronger without a gym membership.
The catch is you have to remember to do the sets. That's where Notch comes in.
ON YOUR APPLE WATCH
- 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 finish buzz
- Optional heart rate capture during holds
- Today count and streak right on your wrist
- Daily reminder if you haven't logged anything yet
ON YOUR IPHONE
- History of every set you've ever logged
- Progression charts so you can see strength build over weeks
- Personal bests and longest streak
- Settings, exercise library, reminder time
- Watch and phone stay synced in the background
FREE VS PRO
Free forever:
- Core watch logging (timer and reps)
- Today's set count
- Basic streak
- Up to 3 exercises
Pro, a $4.99 one-time purchase:
- Full history with progression charts
- Personal bests and longest streak
- Unlimited exercises
- Complication and Smart Stack widget
No subscription. No ads. No upsells. You buy it once.
PRIVACY
Your sets, heart rate samples, and streaks live in a local database on your devices. No third-party analytics. No ad networks. No tracking SDKs. The watch reads heart rate via HealthKit only while a hold timer is running. The iPhone can save each finished set to Apple Health as a workout if you allow it.
WHO IT'S FOR
- Climbers training dead hangs between meetings
- Desk workers building plank time
- Calisthenics folks running pull-up GTG protocols
- Anyone building a strength habit in 30 seconds at a time
- People tired of fitness apps that bury logging behind four 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. Watch-first.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What's new in 2.0
• Breathing exercises: Box, 4-7-8, and Coherence, with a guided orb and gentle haptic cues for each phase
• Heart rate on your sits: live BPM, a calm score that shows how much your heart settled, a resting heart rate trend, and a per-session graph
• Cleaner, simpler exercise settings
• Fixed a bug that could close the Apple Watch app the moment it opened
• More resilient storage, so a one-off hiccup no longer disturbs your saved sets
The developer, Code to Muscle, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Health & Fitness
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- CODE TO MUSCLE, LLC
- Size
- 32.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Notch Pro Unlock $4.99
- Copyright
- © 2026 Code to Muscle, LLC
