App Usage is the easiest to use but powerful app/device usage management app.
It lists the usage time of apps by you preferred sorting order. This usage information is helpful for you to check which apps should be uninstalled as they are not used. It can also be used for spying whether an app has been used by someone else.
It shows the daily count that you checked your phone in either a bar chart or calendar view.
It shows the time that you open an app in either a timeline or calendar view.
It shows you the number of notifications you received for each day and the time that an app posted the notification.
It shows a list of your most used apps on widgets or system notification. It's a convenient way to quick start the apps you use most frequently. The more you use it, the better it gets.
It tracks and lists the history of all installed and uninstalled apps by you preferred sorting order. It's convenient for you to track how many apps updated in a day, and how frequent updates of an app.
It reminds you when an app installed and the summary of daily apps installation.
It lists apps by app name, usage time, access count, update time or size, and allows you to uninstall apps easily and quickly.
Due to the restriction of Android, the app usage can only be tracked when you are using the app and screen is on.