Same problem here, but it did work with the version 0.3.Based on my tests, the application works great, as long as the screen is turned on, the smartphone is charging, reaches the limit, stops charging, all right. But if you "forget" the smartphone on charge for a while, let it fall asleep, then when you return you will find it charged 100%. First of all, I thought about the doze mode, but for the application it is disabled by default. I do not even know what the reason may be.
The smartphone will charge 100%, and the app notification will remain hanging as a reminder, that something went wrong.