Fasting Signal: Phase Timer
See your fasting phase live
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Not just a clock: see whether your body is stabilizing blood sugar, burning fat or in ketosis right now. Plus a refeeding guide and AI food analysis.
Fasting Signal is an intermittent fasting app that doesn't just count the hours. It shows which phase your body is in right now.
■ A timer built around phases
· Blood sugar stabilizing → glycogen depletion → fat burning → ketosis → autophagy → extended fast, each with its own color and explanation
· Set a goal such as 16, 18 or 24 hours and start with one tap
· Reminders when a new phase begins and when you reach your goal
■ A refeeding guide, because breaking the fast matters
· Step-by-step advice on what to eat and when, matched to how long you fasted
· Timed refeeding reminders after long fasts
■ Routines and schedules
· Weekly fasting routines, skip today, next-fast reminders
■ History and insights
· Fasting calendar, 7-day, 30-day and all-time stats, streaks and badges
· Weight, water and meal logs
■ AI food analysis
· Snap a photo or type a food name to estimate calories, carbs, protein and fat
· 1 analysis a day free, 3 a day with ad removal
■ Meet Cham
· A bear whose face changes with each phase. Dress Cham up or add friends.
■ Your records stay on your phone
· No sign-up. Fasting, weight and meal records are stored only on your device.
Available in 7 languages: English, 한국어, 日本語, Deutsch, Español, Português (Brasil), Français
Fasting Signal is not a medical device and does not replace diagnosis or treatment. If you are pregnant or breastfeeding, have diabetes or another condition, or take medication, talk to your doctor before fasting.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Meongmungi, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- User Content
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Meongmungi
- Size
- 41.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Contains
Advertising
Health or Wellness Topics
- In-App Purchases
Yes
- Friends - Dalto $1.99
- Friends - Darami $1.99
- Pajamas $1.99
- Tracksuit $1.99
- Yellow Raincoat $1.99
- Santa $1.99
- New Year Hanbok $1.99
- Remove Ads (Lifetime) $7.99
- Copyright
- © 2026 Meongmungi (Mung Works)