Support
Have a question, found a bug, or have a feature request? Get in touch — we're happy to help.
When reporting a problem, please include your phone model and Android version so we can help faster.
Using BookSafe on iPhone or iPad? Everything is on the support page for iPhone and iPad.
Frequently Asked Questions
How do I add a book?
Tap “+” and scan the ISBN barcode on the back of the book — title, author, cover, and description are loaded automatically. You can also add books manually.
A cover or detail is missing — what can I do?
Not every book is listed in all databases. You can edit the cover, title, description, and every other field yourself at any time in the detail view.
Is my data backed up?
Your library is stored on your device. If Android backup is turned on for your phone, BookSafe is included in it. Via “Data Export” you can additionally save your books as CSV or PDF.
Can I bring my library over from the iPhone?
Yes. Export a backup on the iPhone and import it in BookSafe for Android in the “Options” tab. There is no ongoing sync between Android and iPhone.
Does BookSafe Pro also work on the iPhone?
No. You buy BookSafe Pro once per platform: on Android through Google Play, on iPhone and iPad through the App Store. A purchase on Google Play does not unlock Pro on the iPhone, and vice versa.
Privacy Policy
Last updated: November 2026 · applies to BookSafe for Android
BookSafe is built so that your data belongs to you. There is no user account, no sign-up, no advertising, and there are no BookSafe servers. We do not receive any of your data.
This website uses GoatCounter for privacy-friendly, cookieless visitor statistics. Your IP address is processed briefly to determine an approximate location and to recognise repeat visits, but it is not stored. Visitors are not tracked across other sites. The legal basis is our legitimate interest in improving the website (Art. 6(1)(f) GDPR).
What data does the app process?
- Your library (books, ratings, notes, reading progress, reading sessions) is stored only on your device. We have no access to it.
- Camera: During an ISBN scan, the camera image is analysed only on your device to detect the barcode. No images are stored or transmitted.
- Cover photos: If you take or choose a cover photo yourself, only that single image is imported into the app and stays on your device.
- Notifications: Release reminders are scheduled locally on your device. So that they survive a restart, the app may run briefly when the device starts.
Android backup
If you have turned on backup in the Android settings, Android backs up BookSafe’s data together with your other apps to your Google account. This is done by Google, not by BookSafe; Google’s privacy policy applies. We have no access to this backup. You can turn it off in the Android settings.
Google ML Kit (barcode and text recognition)
For ISBN scanning, text recognition and the cover scanner, BookSafe uses Google’s ML Kit. The recognition itself runs on your device; camera images never leave it. ML Kit does, however, send diagnostic and usage data to Google: device and app information, performance metrics, error codes, and a per-installation identifier that is not intended to uniquely identify you or your device. The data is encrypted in transit and, according to Google, not shared with third parties. Details: Google’s ML Kit data disclosure. The barcode and document scanners run in Google Play services; Google’s privacy policy applies to them.
Purchasing BookSafe Pro
You buy BookSafe Pro through Google Play. The payment and your payment details are processed exclusively by Google; Google’s privacy policy applies. The app only asks Google Play whether Pro has been purchased for your Google account and does not pass this information on.
Network connections
When you scan an ISBN or search for a book, the app fetches publicly available book metadata (title, author, cover, description) from third-party providers. Only the relevant ISBN or your search term is transmitted — no personal data. Services used: the German National Library, K10plus (GBV/SWB), lobid (hbz), Open Library, Apple iTunes, Wikidata, Wikipedia, and cover image servers (e.g. Amazon CDN). Their respective privacy policies apply to their data processing.
What we do NOT do
- No analytics or tracking services of our own, no advertising ID
- No sharing or selling of data
- No advertising networks
- No user accounts
Deleting your data
Since all data lives on your device, you remove it by deleting books in the app or uninstalling the app. You manage a backup in your Google account in the Android settings.
Children
BookSafe for Android is intended for users aged 13 and over. The app collects no personal data.
Controller
Controller for data processing: Fabian Grill (Sisofa), kontakt@sisofa.de
Contact
Privacy questions? kontakt@sisofa.de
Contact
BookSafe is developed by a family in southern Germany, appearing publicly as Sisofa.
Sisofa
Fabian Grill
Email: kontakt@sisofa.de
BookSafe is not a company: no team, no investors, no ad revenue. The Android app is distributed exclusively through Google Play.