Planck Fasting
Lifestyle
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Planck Fasting is an intermittent fasting timer that gets out of your way.
Pick a protocol, hit start, and the timer runs. When you break your fast, it goes into
your history. That is the whole app.
PROTOCOLS
14:10 for a gentle start
18:6 for deeper ketosis
20:4 for advanced fasters
FEATURES
A live ring that shows how far into the fast you are
Clean history of every completed fast with start time, end time, and duration
Pick your default protocol once and forget it
Dark UI built for late nights and early mornings
Works fully offline
Syncs across your iPhone and iPad through your private iCloud database
PRIVACY
No accounts. No tracking. No ads. No analytics. Your fasting data lives on your device
and in your own iCloud, nowhere else.
NOT MEDICAL ADVICE
Planck Fasting is a tracking tool, not a medical device. Talk to a qualified clinician
before starting any fasting protocol, especially if you are pregnant, breastfeeding,
taking medication, or have a history of disordered eating.
THE PLANCK SERIES
Planck Fasting is part of a small family of focused single purpose apps. Same dark
aesthetic, same hbar mark, same idea: do one thing, do it well, then get out of the
way.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Custom Fasting Hours Feature
The developer, Yeong Kwon, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 1 MB
- Category
- Lifestyle
- 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.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Provider
Yeong Kwon
- Yeong Kwon has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
- Copyright
- © 2026