We do not collect, store, or share any personal data. All app data remains on your device.
Data Collection
What we don't collect
- No personal information
- No usage analytics
- No crash reports sent to us
- No advertising identifiers
- No location data
- No device identifiers
What stays on your device
All data created by BookM@rk remains exclusively on your device or your personal iCloud account:
- Your book collection
- Reading progress
- Scanned documents
- Notes and annotations
Permissions
BookM@rk requests only the permissions necessary for core functionality:
- Camera: Barcode scanning for ISBN lookup and page capture
- Microphone & Speech Recognition: Voice-enabled progress tracking and voice notes
Third-Party Services
BookM@rk connects to public book databases to retrieve metadata (title, author, cover image) when you scan a barcode or enter an ISBN:
- Open Library (openlibrary.org)
- Google Books (books.google.com)
- openBD (openbd.jp)
- Crossref (crossref.org)
These services receive only the ISBN you look up. No personal information is transmitted.
Data Storage
- All data is stored locally on your device
- If you use iCloud backup, your app data may be included in your encrypted backup
- We have no access to your iCloud backups
Children's Privacy
BookM@rk does not collect any personal information from anyone, including children under 13.
Changes to This Policy
We may update this privacy policy from time to time. Any changes will be posted on this page with an updated revision date.
Contact
Collapsing Wave Functions
Email: hello@collapsingwavefunctions.com
Website: collapsingwavefunctions.com
Your Rights
Since we don't collect any data, there is no personal data to access, correct, or delete. All your data is under your control on your device.