How can I take backups of my contacts?

Before you Analyze your contacts, create a backup or make sure 'Backup before Cleaning' is On under Settings as it will backup contacts automatically every time before you run the analysis.

To backup manually, tap on 'Backup' on the Home screen and create an account. Tap on 'Backup Now' and look for the backup. The free app has a limit to save only three backups.