DrainScope

An Android app that answers the question "which app — and which piece of hardware — is draining my battery?"

It shows, for the period since the last charge:

per app: CPU time, screen-on/foreground time, Wi-Fi and mobile radio use, audio, sensors, wakelock time, wakeup count and an estimated share of the measured discharge,

per hardware part: display (on-time, brightness buckets, refresh-rate buckets), Wi-Fi radio (active/scan/sleep), cellular radio (active, Rx, signal strength distribution), GPS (CN0 quality), Bluetooth (scan/Rx/idle, mAh), wakelocks and wakeup sources,

live values: level, voltage, current, power, temperature, charge counter, first-use date, CPU load, memory, refresh rate, network type,

battery health & charge cycles: the firmware's cycle count where the vendor publishes it, rated capacity, the peak full-charge capacity observed, total energy used, cycles counted by DrainScope, average mAh per cycle and cycles per month,

history: hourly snapshots in a local database, discharge-rate chart and CSV export.