App Installer will scan your internal storage or SD card(s) for apk files and show you a single unified list of all the apps you can install.
Then it will only take one touch of the finger to either install the app or delete the apk file.

You'll get the following information for each apk:
- app name
- app icon
- app version
- apk file size
- app package
- list of permissions required by the app

You will also see the installation status for each app as follows:
- green icon - the app is already installed and the installed version is the same or newer than the apk version
- yellow icon - the app is already installed but the installed version is older than the apk version
- red icon - the app is not installed at all
- warning icon - the app requires a minimum Android version higher than the one on your device

Note that after installing or uninstalling apps a rescan is needed for the statuses to be refreshed.

You can share your favorite apps with your friends by sending them an app via email.
For email sharing to work an email app (built-in or third party) needs to already be installed and set up on your device.

Permissions used and why:
READ_EXTERNAL_STORAGE - required for accessing the internal storage or SD Card
WRITE_EXTERNAL_STORAGE - required for deleting the apk files from the internal storage or SD Card
REQUEST_INSTALL_PACKAGES - required on Android 8.0 and newer for calling the Package Installer