If you wish to set the value to auto-update, then you will need to allow notifications from the app to work as well. We are committed to keep you up-to date with the latest information about your smartphone's battery level.

The application also syncs all your devices so you don’t have to look at different apps to determine the battery level of any of them.

It is able to send you notifications of low battery level for each device. It can be useful to know whether you need to charge or not.