Tyvin

Simple Fasting Timer

Only for iPhone

$4.99

iPhone

Launch price: pay once, no subscription. The price will go up as new features arrive, so early supporters get the best deal. Fasting, without the noise. Fasting timer without a subscription. Pay once, own it forever. No account, no ads, no tracking. Tyvin is a simple intermittent fasting tracker that does one thing well: it helps you time your fasts. Everything stays on your iPhone. START A FAST IN SECONDS Pick a fasting protocol, start the timer and see at a glance how far along you are. A clear progress view shows your fasting and eating windows. UNDERSTAND WHERE YOU ARE IN YOUR FAST See which stage of your fast you're in as the hours pass, with a short, plain-language note about what is typically going on in the body at that point. No jargon, no noise. WIDGETS ON YOUR HOME SCREEN Check your fast without opening the app. Your current fasting or eating window is always one glance away. SYNC YOUR WEIGHT WITH APPLE HEALTH Log your weight and keep it in sync with the Health app. Tyvin only reads and writes your weight, nothing else. FLEXIBLE WHEN LIFE ISN'T PERFECT Forgot to start the timer or ended a fast earlier than planned? Just edit the start or end time afterwards. REMINDERS THAT STAY OUT OF YOUR WAY Get notifications when your fasting or eating window changes, so you don't need to keep checking the app. HISTORY AND STREAKS Browse your past fasts and see your week at a glance. Keep your streak going and spot your own patterns over time. PRIVATE BY DESIGN No registration, no cloud account, no analytics. Your data lives on your device. Export it any time, and import it back or bring it over from another app with the JSON import. WHY TYVIN? Many fasting apps lock basic features behind an expensive yearly subscription. Tyvin is built for people who just want a reliable timer: a single purchase, no recurring fees, no paywalls. Tyvin is not a medical app and doesn't provide medical advice. Fasting stage information is general and for reference only. Individual experiences vary. Talk to your doctor before starting a fasting regimen, especially if you have a health condition, are pregnant or take medication.

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The developer, ANTTI MIKAEL SIMONEN, 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
    ANTTI MIKAEL SIMONEN
    Size
    3.9 MB
    Category
    Health & Fitness
    Compatibility
    Requires iOS 26.5 or later.
    • iPhone
      Requires iOS 26.5 or later.
    Languages
    English and Finnish
    Age Rating
    9+
    Copyright
    © 2026 Antti Simonen
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.