Measure the charging of the battery, unfortunately some devices cannot support based on the appropriate measurement chip if the devices do not have enough of it. They cannot run as well as others which have more appropriate measurement chips.

The function of app is not for mA specifically. It makes you easier in knowing the best kind of charger/USB combo for same devices.

Feature:
+ Milliampere status
+ Temperature battery
+ Status battery
+ Battery information
+ Device information
+ Lightweight, Simple UI and Free

Phone Ampere charger gives you notification about the mAH charging total that is accepted, and also gives the battery information when the charger is put on. It shows the total of mAH charging when it is connected to a USB cable or charger (AC/Wireless). the notification gives you information of the battery condition, so you be able to access more customization, the battery level and also it very detail in charging Volt or time. finally, it indicates what is the type of best device charger that so suitable for yours.

Some chargers are able to plug to various mobile devices. If the charger provides sufficient power in charge, the connected device will charge correctly and quickly. It notifies if the device supports it and an amperage stay in mA. You have to connect the charger in charging battery to notice whether it is connected or not. It shows the notification about the total of your system consumes for several times.

Don't forget, to take care of your battery in good condition, so other devices will run as well.