Libre Contacts Backup

Libre Contacts Backup is a FLOSS native Android contact backup app that works entirely offline, encrypts your backups, and has no third-party runtime dependencies.

Included Android 8.0+ support Reads contacts through READ_CONTACTS only when a backup starts User-selected folder through the Storage Access Framework Daily, weekly, monthly, or custom-time schedules using AlarmManager Timestamped single-file .lcb archives containing VCF, JSON, and CSV Optional password-protected AES-GCM archive encryption Encryption passwords are wrapped with Android Keystore for scheduled backups Retention choices for the last 1, 3, 5, 10, or all backups Scheduled alarms are restored after device reboot Scheduled runs post a success or failure notification when notifications are allowed