App Manager provide list of apps installed in your device and you can uninstall apps from it. It also display brief information about app like permissions, installed date, etc..
It also provides multiple app uninstallation feature and it display history of uninstalled apps.
You can export app into apk and view exported apk's within app.

Usage manager monitor apps. And provide data of how much time you use the application and how much time you open the app. You can also view the description about which time you open the app (specific time period of app usage).

Features:

1. App manager
2. Usage manager
3. Exported apk's
4. Multiple apps uninstaller
5. Uninstalled apps history