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MiniWatts

MiniWatts is a free, open-source utility app for iOS. An iPhone battery, charging and thermal instrument built on private iOS APIs — real charger watts, what actually reaches the cell, all 30 temperature sensors, and the USB-PD handshake. It has 313 GitHub stars and is released under the Apache-2.0 license.

github.com/ResistanceTo/MiniWatts (opens in a new tab)

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About MiniWatts

An iPhone battery and charging monitor built on Apple's private APIs. It reads the phone's own power-management sensors — the ones iOS uses to run the charge — and shows what the charger is delivering, how much of it reaches the cell, where the rest goes as heat, and what every temperature sensor in the phone is doing while it happens.

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FAQ

MiniWatts FAQ

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What is MiniWatts?

MiniWatts is a free, open-source utility app for iOS. An iPhone battery, charging and thermal instrument built on private iOS APIs — real charger watts, what actually reaches the cell, all 30 temperature sensors, and the USB-PD handshake. It has 313 GitHub stars and is released under the Apache-2.0 license.

Is MiniWatts free and open source?

Yes. MiniWatts's source code is public on GitHub under the Apache-2.0 license, which is OSI-approved or FSF-free.

How do I install MiniWatts?

MiniWatts publishes releases on GitHub (latest: v1.4.1); download the build for your device from the repository's Releases page, or build it from source by following the README.

Is MiniWatts still maintained?

The repository's most recent commit was on Sep 25, 2026. appsgit only lists apps whose repository had a commit in the last six months.