"Backup Contacts In Address Book - Export As vCard" is an iPhone application developed by 齐 陈. This utility tool allows users to efficiently backup their contacts into a vCard file (.vcf) with ease. Simply execute a few clicks to safeguard your contacts conveniently. The program offers a straightforward approach to creating backups and provides multiple options to save the backup file.

With this app, users can quickly backup their contacts without any hassle, ensuring that their valuable contact information is securely stored. Additionally, the program offers various ways to save the backup file, enhancing user flexibility. Best of all, this application is available for free, making it accessible to all iPhone users looking to safeguard their contact data.