The app works on Android devices from. Not every device is supported because there are devices that lack an appropriate measurement chip (or interface) and they can not be supported at all.
The app is not supposed to be accurate mA. It is only good to evaluate which Charger Cable / USB combo works best for you on the same device.
General information: The application measurements of the charge / discharge current of the battery. If you connect a charger then the current that the charger gives will be used to power your phone and the remaining power will be charged in the battery.
Supported Android
{4.0.3 and UP}
Supported Android Version:-
Ice Cream Sandwich (4.0.3–4.0.4) – Jelly Bean (4.1–4.3.1) – KitKat (4.4–4.4.4) – Lollipop (5.0–5.0.2) – Marshmallow (6.0 – 6.0.1) – Nougat (7.0 – 7.1.1) – Oreo (8.0-8.1)
Download Ampere Pro 2.17.4 APK For Android