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Camera use in the app
The PageFlick beta uses camera access to recognise a finger gesture. Apple's Vision framework analyses frames on your device. PageFlick does not record or upload video.
The camera runs only while a book or the practice view is active and tracking is enabled. You can decline camera permission and use the on-screen reading controls.
Books, reading positions, and settings
The app stores imported EPUBs and reading positions locally. It also stores preferences and a device identifier used to distinguish each device's reading position.
Its iCloud implementation stores books and per-device reading positions in your private CloudKit database. This is separate from camera processing. Cross-device sync is still being tested in the beta.
Your use of iCloud is also subject to Apple's privacy policy.
External links
Links to GitHub, Apple, and other sites take you to services with their own privacy policies.
Questions
See support for the developer's public profile and contact information.