Flip page with face, hands free. For example, while playing piano, you can turn your head by an angle or open mouth to flip music notes page without hands. 1. Include folder system to store your files. 2. Transfer files by web upload mode, Air drop and photo album. 3. Zip and unzip files. 4. Support iOS 13 dark mode. 5. Support landscape and portrait orientation. 6. Support Google Drive, Cloud share files. 7. Write notes on image file, support Apple pencil. 8. Toggle face button to enable/disable face flip. 9. Multiple images picker. 10. Supports JPG, PNG, GIF, PDF 11. Flip page horizontally and vertically. 12. Face inclined angle setting。 13. Flip page delay setting 14. Flip vertically half screen 15. Auto scroll when flip vertically half screen, setup initial time and speed. 16. Built-in metronome. 17. Chat with friends. 18. Open mouth to flip page,
