Plainfast: Fasting Tracker
Simple 16:8 Intermittent Timer
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
The honest fasting timer. No sign-up quiz, no account, no ads. Your full history stays free, forever. Just a calm dial and the hours you put in.
Plainfast is the honest fasting timer. Start a 16:8, 18:6, 20:4 or OMAD fast in one tap and watch a calm dial count the hours. No sign-up quiz, no account, no ads.
Open the app and the timer is the first thing you see. You do not answer fifty questions about your body first, and you do not lose your past fasts after a week. Every fast you log stays in your history, free, for as long as you use Plainfast.
WHAT IT COVERS
• Intermittent fasting with 16:8, 18:6, 20:4 and OMAD presets, or a custom target that suits your day
• Longer fasts: the clock keeps running past your goal, so 24, 36 and 72 hour fasts are timed hour by hour
• Water fasts and extended fasts logged the same way as your daily window
• A 10-phase timeline of what typically happens as a fast goes on: glycogen use, the shift toward fat burning, ketosis, and the hours that research often links to autophagy
KEY FEATURES
• A plain dial that shows time elapsed, time left and your current phase at a glance
• Live Activity and Dynamic Island, so your fast keeps time on the lock screen
• Home screen widgets
• Reminders for the start and end of each fast
• Full history, streaks and stats, all free
• Weight log, plus mood and glucose logs after each fast
• Export your fasting history as a CSV file
• Dark mode that is designed, not just inverted
WHO IT IS FOR
• Beginners trying 16:8 who want a timer, not a program
• OMAD and 20:4 regulars who log every day
• Anyone who does an occasional 36 or 72 hour fast
• Women and men who would rather track quietly than take a quiz first
PRICING
Free: the timer, all presets, the phase timeline, full history, streaks, stats, logs, widgets and reminders.
Premium (monthly, yearly or a one-time lifetime unlock) adds unlimited custom presets, adding past fasts, and mood and glucose correlation charts.
Plainfast is a timer and a log, not medical advice. If you are pregnant, diabetic, take medication or plan a fast longer than 24 hours, talk to your doctor first.
Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your App Store account settings.
Privacy Policy: https://trifoiltrailblazer.com/privacy-policy
Terms of Use: https://trifoiltrailblazer.com/terms-of-service
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Plainfast is here. A calmer, more honest fasting timer: full history free, a new dial, and a Live Activity that keeps time on your lock screen.
The developer, Ivan Terekhin, 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:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Ivan Terekhin
- Size
- 53.1 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Premium Lifetime $29.99
- Premium Yearly $19.99
- Premium Monthly $6.99
- Copyright
- © 2026 Trifoil Trailblazer