BioState

Intermittent Fasting Timer

Only for iPhone

Free · In‑App Purchases · Designed for iPhone

iPhone

Master your metabolism. Track real-time biological stages from your Lock Screen. See exactly when you hit different stages from anabolic to deep reset Track Your Fast. Visualize Your Biology. BioState is more than a stopwatch—it’s a metabolic compass. While other apps just count down the minutes, BioState uses your fasting data to visualize exactly what is happening inside your body. Built for biohackers, intermittent fasters, and those seeking cellular health, BioState bridges the gap between effort and biological insight. THE FIVE METABOLIC STAGES Understand the science of your fast. BioState tracks your progression through five distinct biological phases based on your elapsed time: • Anabolic (0-4h): Your body processes your last meal. • Catabolic (4-16h): Transitioning from glucose to fat-burning. • Ketosis (16-24h): Fat-burning is fully initiated as primary fuel. • Autophagy (24-72h): Cellular "cleanup" and regeneration begins. • Deep Reset (72h+): Maximum immune system and hormonal reset. ENGINEERED FOR THE MODERN iPHONE Get the data you need without ever unlocking your phone. BioState utilizes the latest iOS technology to keep you informed: • Live Activities: See your active timer and current metabolic stage on your Lock Screen. • Dynamic Island: Monitor your progress at a glance while using other apps. • Home Screen Widgets: Beautifully designed widgets to keep your goals front-and-center. THE "TIME MACHINE" EDITOR Life happens. If you forgot to start your timer, our intuitive "Time Machine" feature allows you to retroactively edit your start time. Your history and metabolic data stay 100% accurate, no matter when you remembered to tap "Start." PRIVACY & SIMPLICITY Your health data is personal. • No accounts or logins required. • No tracking or personal data collection. • 100% On-Device: Your data never leaves your iPhone. UPGRADE TO BIOSTATE PRO Take your fasting journey further with Pro features: • Unlimited History: Look back at every fast you’ve ever completed. • Exclusive Widgets: Access premium widget styles for your Home Screen. • Support Independent Devs: Help us continue building the most transparent fasting tool on the App Store.

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

The developer, xavier toefield, 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:

    • Diagnostics

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

Accessibility

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

Information

  • Seller
    • xavier toefield
  • Size
    • 1.6 MB
  • Category
    • Health & Fitness
  • Compatibility
    Requires iOS 18.5 or later.
    • iPhone
      Requires iOS 18.5 or later.
    • Mac
      Requires macOS 15.5 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.5 or later.
  • Languages
    • English
  • Age Rating
    9+
  • In-App Purchases
    Yes
  • Copyright
    • © 2026 Xavier Toefield
  • Developer Website
  • Privacy Policy