Description
MiniWatts reads the iPhone's own power management sensors and shows what is actually flowing: charger input in watts, what reaches the battery, rail voltages and currents, every temperature sensor placed on a map of the phone, the USB-PD profiles the charger offers, and a history of each charge.
It reads private system frameworks, so it is sideload-only and can never be on the App Store. It was built and verified on an iPhone Air; sensor names and scaling differ between models, so some readings may be wrong on yours.
Includes a Home Screen and Lock Screen widget, a charging Live Activity and a floating Picture in Picture meter. The widget and the Live Activity live in an app extension: signing it takes one more App ID, and LiveContainer cannot run extensions, so installed there MiniWatts has neither.
Free and open source: https://github.com/ResistanceTo/MiniWatts
Change Log
Release notes: https://github.com/ResistanceTo/MiniWatts/releases/tag/v1.6.0
Version
1.6.0 (21)
Last Updated
October 26, 2026
