ZenFast - Fasting Timer
16:8 Intermittent Fasting
Only for iPhone
$0.99 · Designed for iPhone. Not verified for macOS.
iPhone
ZenFast is the no-nonsense intermittent fasting timer for people who just want to track their fasting hours — without subscriptions, without ads, without medical claims.
ONE-TIME PURCHASE
Pay once, own forever. No free trial trap, no auto-renewing subscription, no hidden fees. The opposite of every other fasting app.
BUILT-IN PROTOCOLS
- 16:8 (most popular, beginner friendly)
- 18:6 (intermediate)
- 20:4 (warrior diet)
- OMAD 23:1 (one meal a day)
- Custom duration (set your own hours)
ELEGANT RING TIMER
A large circular progress ring shows your fasting progress at a glance. Dark ring during fasting, bright ring during your eating window. Tap once to start, tap once to end.
HISTORY & STREAKS
- Calendar heatmap showing every day you fasted
- 30-day bar chart of fasting durations
- Total sessions, longest streak, average duration
- All data stored locally on your device
SMART NOTIFICATIONS
Get notified when your fasting goal is reached so you can break your fast on time. Get a gentle reminder when your eating window is closing.
100% OFFLINE
Your fasting data never leaves your iPhone. No account, no cloud sync, no analytics, no third-party SDKs. Your health journey is private.
NATIVE iOS DESIGN
- Built with SwiftUI for a smooth, responsive feel
- Full Dark Mode support
- Dynamic Type for accessibility
- Available in English, Chinese, Japanese, Korean, Spanish
WHO IT IS FOR
Daily 16:8 fasters who don't want their data analyzed. Beginners who want to start without committing to a subscription. People who tried Zero or BodyFast and got tired of the upsells. Anyone who prefers a clean, focused tool over a bloated wellness platform.
Note: This app is a timer tool. It does not provide medical, dietary, or weight-loss advice. Consult a healthcare professional before changing your eating patterns.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, 岩 薄, 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
- Seller
- 岩 薄
- Size
- 1.1 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.4 or later.
- iPhone
Requires iOS 26.4 or later. - Mac
Requires macOS 26.4 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.4 or later.
- iPhone
- Languages
English and 4 more
- English, Japanese, Korean, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- Copyright
- © 2026 ZenFast
