Privacy
Privacy policy
Last updated: October 4, 2026
happybook helps you keep what your books gave you. To do that, the app saves your library and your notes. This page explains, simply, what data is collected, why, who it is shared with, and how you stay in control.
In short
- Your notes and thoughts are private. They only become visible if you choose to share them.
- Scanning a page happens on your phone: the photo is not uploaded, only the text you keep is saved.
- We don't sell your data and there are no ads in the app.
- You can delete your account at any time from the app: your data is then permanently erased.
1. Who is responsible for your data
The data controller is [À compléter : nom ou société responsable, adresse].
For any question about your data, write to us at [À compléter : email de contact].
2. The data we collect
Your account
- Your email address and password (stored encrypted, never in plain text), or your identifier if you sign in with Apple or Google.
- Your username, if you choose one, and your language.
Your reading
- The books in your library, their status, your favorites, your lists and your reviews.
- Your notes: passages, your thoughts, page numbers and the links you create between notes.
- Your reading sessions: duration, pages read and mood, if you enter it.
- The resulting statistics: pages, minutes, reading days in a row.
Your device
- The app version, your phone's operating system and notification status.
- A technical token used to send you notifications, if you accept them.
Analytics and diagnostics
- App usage statistics (screens visited, main actions) via Firebase Analytics, linked to your account. They help us understand what is useful and what isn't.
- Crash reports via Bugsnag (device model, app version, technical context of the error), to fix bugs.
On this website
- Anonymized visit statistics via Google Analytics.
- Your email address, if you leave it to try the Android version early. We only use it to let you know when the beta is ready.
3. What stays on your phone
- Scanning a page: the photo is read directly on your phone. It is not sent to our servers. Only the text you choose to add to your note is saved.
- Scanning a book's barcode also happens on your phone. Only the ISBN number is sent, to find the book.
- Share images of your quotes are created on your phone. They are only shared if you decide to.
4. Why we use this data
- To run happybook: keep your library, your notes and your graph, and find them again on your devices.
- To compute your statistics and your reading recap.
- To send you notifications, if you accepted them. You can turn them off in the app or phone settings.
- To understand how the app is used and fix bugs, to improve it.
- To manage your subscription.
This processing is based on providing the service you use, on our legitimate interest in improving the app and keeping it working properly, and on your consent for notifications.
5. What others can see
- Your notes and thoughts stay private.
- Your username is visible on your profile, if you choose one.
- Your current reads are only visible if you turn this on in the privacy settings.
- Your reviews stay private, unless you choose to make them public.
- A quote shared as an image is visible to the people you share it with.
6. Who we share your data with
We don't sell your data or use it for advertising. We rely on a few service providers, only to run the service:
| Provider | Role |
|---|---|
| [À compléter : hébergeur du serveur et pays] | Hosting of our servers and database |
| Google Firebase | Sending notifications and app usage statistics |
| Bugsnag (SmartBear) | Crash reports |
| Google Analytics | Visit statistics for this website |
| Apple and Google | Sign-in with your Apple or Google account, subscription payment |
| Open Library and ISBNdb | Looking up book information (title, ISBN), with no personal data |
Some of these providers may process data outside the European Union or Switzerland. In that case, they rely on recognized safeguards, such as the European Commission's standard contractual clauses.
7. Your subscription
Subscription payments are handled by Apple's App Store or Google Play. We never receive your bank details. You manage and cancel your subscription from your App Store or Google Play account settings.
8. How long we keep your data
- As long as your account exists, we keep your data so you can find your library and notes.
- When you delete your account, your account data, library, notes, sessions and lists are permanently erased from our database.
- The email left for the Android beta is kept until the beta opens, or until you ask us to delete it.
9. Your rights
At any time, you can:
- access your data and get a copy of it;
- correct it, for example your email or username, directly in the app;
- delete it: in the app, go to Settings → Delete my account;
- object to some processing or ask for it to be restricted;
- withdraw your consent to notifications, in the settings.
To exercise these rights, write to us at [À compléter : email de contact]. If you believe your rights are not respected, you can also contact your country's data protection authority, for example the CNIL in France or the FDPIC in Switzerland.
10. Security
Exchanges between the app and our servers are encrypted. Your password is stored encrypted, and your session is kept in your phone's secure storage. No system is infallible, but we do our best to protect your data.
11. Minimum age
happybook is intended for people aged at least [À compléter : âge minimum]. If you believe a younger child has given us data, write to us and we will delete it.
12. Changes
We may update this policy, for example when the app changes. The last update date is shown at the top of this page. If there is a significant change, we will let you know in the app.
13. Contact us
A question, a request? Write to us at [À compléter : email de contact].