After installing it on your device simply follow the below steps to take a backup.
- Open Astro File Manager
- Select Application Backup
- Tick on the checkbox next to the application that you need to backup
- Click on the Backup Button.
To share the backed up application follow the below steps :
- Open the Astro File Manager
- Select "Manage my Files"
- Open backups=>apps
- Click and Hold the application and share it using bluetooth.