BatteryBot

BatteryBot is an Android utility from Darshan Computing, LLC that monitors the state of the device battery and keeps that information in front of the user. It belongs to the class of background system tools rather than apps you open for a single task: the point is to have battery readings available while the phone or tablet is in ordinary use.

This entry covers the edition the publisher labels as the free version. A separate edition, BatteryBot Pro, comes from the same developer. The facts recorded here do not set out which functions are reserved for the paid edition, so anyone choosing between the two should compare the publisher's own listings before deciding.

The code is released under GPL-3.0-only, a copyleft license, which means the source can be read and modified and that derivative works carry the same terms. Android is the only platform recorded, so there is no desktop or other mobile build to fall back on if you work across several kinds of devices.