vCard Editor at Mac App Store analyse

vCard Editor is an application to create and edit vCards directly.
vCard is a file has an extension vcf and used to exchange contact information between various contact applications. Not only Apple Contacts but also such applications can import/export the file.
vCard Editor also has a feature of reading CSV file and showing a contact as QRCode. You can save the QRCode as a image to print on various materials.
Features:
- Reading/Writing vCard file
- Reading CSV and Exporting vCard as CSV
- Find and Replace by TextFinder and sorting function
- Editing by dedicated panel for data type
- Undo/Redo
- Changing font and size
- Drag&Drop vCard
- Grouping by vCard CATEGORIES
- Showing QRCode

And this application doesnt communicate with outside servers through the Internet. The Contact data is only used inside of the app and never be sent to any servers other than iCloud.