Aer is a private local (+secondary) storage utility application for android.

Do you worry about your private pictures or files appearing in other apps?
That's where Aer private storage comes in. Files in Aer storage won't appear in the other apps.

Instead of being a stand-alone file manager user interface, it hooks into various components of
Android making it feel like a native part of the operative system.
Moreover it provides ways for the user to export contents from other apps and save them