Sleep Debt: Rest & Recover

Track your sleep deficit

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

See how much sleep you've missed in the last 14 days. Sleep Debt reads Apple Health and recommends a bedtime to help you catch up — privately, on device. Sleep Debt turns your Apple Health sleep data into a single, honest number: how many hours of sleep you actually owe yourself. Most of us lose a little sleep most nights — 30 minutes here, an hour there — and never see the running total. Sleep Debt does the math for you over a rolling 14-day window, weighted toward your most recent nights, and tells you what tonight should look like to start catching up. WHAT YOU SEE • Today's sleep balance — how much you're behind (or ahead of) your goal • An ideal bedtime for tonight, calculated from your goal wake time • A 14-day history with weekly and daily breakdowns • Time in each sleep stage when Apple Health has staged data • A monthly calendar that lets you spot patterns at a glance HOW IT WORKS Sleep Debt uses a 14-day rolling window. Each night's deficit (goal minus actual sleep) is weighted exponentially so recent nights count more than older ones. The recommendation for tonight follows published sleep research: roughly a quarter of your accumulated debt can be repaid in a single night, capped at +/- 1.5 hours and held within a healthy 6 to 10 hour range. You can read the reasoning behind the algorithm inside the app under "How Sleep Debt Works." A GENTLE BEDTIME REMINDER Turn on Bedtime Reminder and Sleep Debt will schedule a local notification a few minutes before tonight's recommended bedtime. The reminder time updates as your sleep data changes — no servers, no accounts. YOUR DATA STAYS ON YOUR DEVICE • Sleep Debt reads sleep samples from Apple Health (read-only) • Nothing is uploaded, synced, or shared with any third party • No accounts, no advertising, no analytics, no tracking • Revoke access at any time in Settings > Health REQUIREMENTS • iPhone running iOS 18 or later • Sleep data in Apple Health (from Apple Watch, third-party trackers, or manual entry) Sleep Debt is an awareness and planning tool, not a medical device. It does not diagnose sleep disorders. If you have ongoing concerns about your sleep, please talk to a qualified clinician.

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This update refreshes how Sleep Debt presents itself and tidies things under the hood: • Redesigned App Store screenshots • Added a privacy manifest for full App Store compliance • Corrected the in-app support email • Minor internal cleanup Sleep well.

Version 1.0.1

The developer, 博志 袁, 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
    • 博志 袁
    Size
    • 7.2 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
    4+
    Copyright
    • © 2026 Bo
  • Developer Website
  • Privacy Policy

    • More by 博志 袁

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