BattAI: Battery health score

Estimated time to 80%

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

See when your iPhone battery really needs replacing: health score, maximum capacity over time and an estimated time to 80%. PDF report included. Free to start. BattAI • BattAI uses five values from public iOS APIs: battery level, charge state, Low Power Mode, whole-device thermal state, and time. Other results are calculated from those readings or added by you. Each detail shows its source and limits. • BattAI has no account, telemetry, ads, or network requests. Data stays on this device, except for a minimal feature-limited snapshot sent directly to your paired Apple Watch. Sampling is limited, analysis runs at most every five minutes, estimates use ranges, and missing data stays missing. Health • Battery health score • What shapes the score • Maximum capacity over time • Estimated time to 80% Charging • Charge care • Charge range • Charge rate Reports • Create a clear battery report for service, resale, or your own records. • Full report: the app's charts and text • The same report saved as a PNG • All of your data as a plain-text table Privacy • No ads, analytics, tracking, third-party SDKs, or internet requests. Data stays here, except for a minimal snapshot sent directly to your paired Apple Watch. • Public iOS APIs provide battery level, charge state, Low Power Mode, whole-device thermal state, and time. BattAI labels every other result as estimated or provided by you. • The fixed rules follow established lithium-ion guidance on deep discharge, long periods at high charge, heat, and charge volume. Apple’s 80% maximum-capacity service benchmark is kept separate from BattAI coaching bands. No result promises extra battery life. Understand your battery over time • One payment. Lifetime access. No subscription. • Your purchase is tied to your Apple Account and works on your devices.

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The developer, Guan Feng Lai, 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

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    Information

    Seller
    • Guan Feng Lai
    Size
    • 16.1 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 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.
    • Apple Watch
      Requires watchOS 10.0 or later.
    Languages
    English and 43 more
    • English, Arabic, Bengali, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malay, Malayalam, Marathi, Norwegian Bokmål, Oriya, Polish, Portuguese, Punjabi, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Urdu, Vietnamese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 Cait518
  • Developer Website
  • Privacy Policy

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