Caffeine Clock

Health & Fitness

Only for iPhone

Free · Designed for iPhone

iPhone

full rebuild to Swift Stop guessing why you can't sleep. Caffeine Clock uses advanced half-life modeling to show you exactly how much caffeine is still in your system—long after your last cup. Most people don't realize that up to 25% of their morning coffee is still active at bedtime. Caffeine Clock visualizes this hidden energy, helping you find your perfect "cutoff time" for better rest and consistent focus. KEY FEATURES: Real-Time Half-Life Graph See your active caffeine decline hour by hour. Know exactly when you'll be clear. Smart Sleep Alerts Get notified if a late latte puts your sleep at risk. We calculate the impact based on your personal bedtime. Personalized Metabolism Everyone processes caffeine differently. Customize your half-life sensitivity to match your body. Focus vs. Jitter Zones Stay in the productive "Focus Zone" and avoid the anxiety-inducing "Wired Zone" with clear visual thresholds. Live Widgets Monitor your status right from your Home Screen and Lock Screen without opening the app. WHY CAFFEINE CLOCK? Free: No paywalls, no subscriptions. Private: All data stays on your device. No accounts, no tracking. Simple: Just tap to log. We handle the math. Take control of your daily rhythm. Download Caffeine Clock today and sleep better tonight.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

Full rebuild of the app in Swift

Version 1.2.0

The developer, BEN LUKE SPINK, 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, 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
      • BEN LUKE SPINK
    • Size
      • 3.4 MB
    • Category
      • Health & Fitness
    • Compatibility
      Requires iOS 17.0 or later.
      • iPhone
        Requires iOS 17.0 or later.
      • Mac
        Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
      • Apple Vision
        Requires visionOS 1.0 or later.
    • Languages
      • English
    • Age Rating
      13+
      • 13+
      • Learn More
      • Infrequent
        Medical Treatment information
    • Copyright
      • © 2025 Ben Spink
  • Developer Website
  • Privacy Policy

    • More by BEN LUKE SPINK