BattAI: Battery health score
Estimated time until 80%
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
See when your iPhone battery really needs replacing: battery health score, maximum capacity over time and an estimate of when it reaches 80%. PDF report included.
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 until 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.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Every feature is free for 24 hours — no payment, no auto-charge.
• After that you keep battery alerts and the live battery level; the rest needs a one-time purchase (yours for good, not a subscription).
• New alerts, even with the app closed: full charge (80/90/100%), low battery (10/20/30%), overheating.
• Cleaner Home and purchase screens.
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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Guan Feng Lai
- Size
- 16.4 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.
- iPhone
- 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+
- 4+
- In-App Purchases
Yes
- 1-Day Free Trial USD 0.00
- Lifetime Pro USD 6.99
- Copyright
- © 2026 Cait518