Fasting Center
Extended Fasting Calculator
Free · Designed for iPad. Not verified for macOS.
Fasting tracker with real numbers - plan, track, and measure your fast.
Fasting Center is a fasting timer and tracker built around data, not generic guesses. Start a fast, watch your progress on a live ring with fasting stages, and see projections of weight change, fat loss, and energy use - personalized from your own body stats.
TRACK YOUR FAST
- Fasting timer with stage markers - fat burning, ketosis, and more
- Any duration: 12:12 to multi-day extended fasts, or open-ended
- Edit start and end times when life happens
- Projected vs measured weight loss, side by side
PLAN WITH REAL NUMBERS
- Enter your stats and fast length, get a personalized projection before you start
- Estimated total weight change, fat loss, and energy use
- Fine-tune goals for your next fast based on what actually happened
MEASURE YOUR PROGRESS
- Log weight, body fat, waist, ketones, and glucose
- Apple Health sync - weight and body fat flow in automatically
- Charts that plot your real history over time
- Daily log for notes, mood, and how you feel
YOUR DATA, SAFE
- Free to use
- No ads
- Optional account with cloud sync and backup - sign in with Apple or Google
- Delete your data and account anytime, completely
Whether you're planning your first extended fast or fine-tuning a routine you've run for years, Fasting Center gives you a clear, data-driven picture of what to expect - and what actually happened.
Fasting Center is a planning and estimation tool. It does not provide medical advice - always consult a healthcare provider before starting an extended fast, especially if you have any underlying health conditions.
Ratings & Reviews
- Blood pressure tracking with Apple Health sync
- Home screen widgets
- Custom date ranges on charts with raw readings view
- BMI and personal profile
- Tap the fasting ring to see progress in percent
- Improvements and fixes
The developer, Andrey Titov, 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 Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
- User Content
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Andrey Titov
- Size
- 41.7 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 14.0 or later.
- iPhone
Requires iOS 14.0 or later. - iPad
Requires iPadOS 14.0 or later. - iPod touch
Requires iOS 14.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- Copyright
- © 2026 Andrey Titov