FastingWindow

Intermittent Fasting Tracker

Free · In-App Purchases · Designed for iPad. Not verified for macOS.

FastingWindow is the cleanest, simplest way to track intermittent fasting — no account, no subscription, no noise. Pick a schedule (16:8 or 12:12), tap Start Fast, and watch your progress in real time. A live ring shows exactly where you are in your fast, and as the hours pass you'll move through five metabolic stages — from initial digestion all the way to deep ketosis. Each stage is explained so you actually understand what your body is doing, not just how long you've been waiting.

  • This app has not received enough ratings or reviews to display an overview.

- Much more visible icons along the timer ring - Better colors for each stage

The developer, Moon Labs, 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.

    Privacy practices may vary based, for example, on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Provider
    • Moon Labs LLC
    Size
    • 5.7 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 26.4 or later.
    • iPhone
      Requires iOS 26.4 or later.
    • iPad
      Requires iPadOS 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.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 Moon Labs