Effective date: November 14, 2026. Contact: alex2018mosk@gmail.com.
What stays on your device
Books, bookmarks, quotes, notes and your reading position are stored on your device. Reading works without an internet connection. We do not receive them. Reading aloud is performed by your phone’s speech synthesis; our server is not involved.
What is sent to the server
Only when you start a translation yourself:
- The text of the selected book. The server passes it to the AI provider Anthropic (Claude) for translation.
- The translation languages.
- An anonymous installation identifier. It is created automatically and is not linked to your name or email address. We do not ask for them and do not collect them.
Sign-in with Google
In the app, signing in is needed only to top up your balance, so that purchased characters and statistics can be restored on a new phone. You can read without signing in. The server stores a de-identified account identifier in hashed form. Your name, email address and photo are not stored.
If you are signed in and have allowed reading summaries to be sent, your account stores your reading history: the start and end time of each reading session, active time, the number of words and the language of the book. Book titles and book text are not transmitted. Without signing in, the history stays on the device.
Reading summaries
Only if you are signed in and have allowed it, the app sends three numbers to the server at launch, linked to the anonymous installation identifier: total reading time, number of reading days and average reading speed. Book titles, their text, language and dates are not sent. We use these numbers to calculate averages across all readers. The app asks for permission before you sign in; you can change your decision in your profile.
Sync with Google Drive
This is an optional feature: it works only if you turn it on yourself and grant access. The app then copies book files, finished translations, your reading position, bookmarks, quotes and notes to the app’s hidden folder in your own Google Drive.
- The data goes directly from your phone to Google Drive. Our server does not receive it, and we cannot read it.
- The app sees only its own hidden folder and has no access to the other files in your Drive.
- Storage of this data is governed by Google’s terms. It takes up space in your Google Drive.
- You can turn sync off in the “Sync” menu. To delete data that has already been saved, open the Google Drive settings, go to the section for managing apps, find LingoReader and delete the app’s hidden data.
The use of data obtained through Google APIs complies with the Google API Services User Data Policy, including the Limited Use requirements.
Website
The website lingoreader.uz sets no tracking cookies and uses no visitor counters or analytics. Everything below concerns only the “Translate online” page:
- Sign-in with Google. Only this page loads Google’s sign-in script from accounts.google.com. Google handles the sign-in itself under its own terms; the server receives and stores the same as when you sign in in the app.
- Data in your browser. The sign-in token, the first letter of your name for the avatar and the titles of the books you translated are kept in your browser’s local storage (localStorage). Book titles are never sent to the server. Signing out removes the token; the rest is removed when you clear the site’s data in your browser.
- Size estimate. A book you upload to see its size and price is processed on the server and deleted at once.
- Translation. A book uploaded for translation follows the same rules as in the app: the original is deleted once the translation is assembled, and the translation once you download it, in any case no later than 24 hours.
How long it is kept
- The original is deleted from the server immediately after the translation is assembled.
- The translation is deleted as soon as the app has received it, and in any case no later than 24 hours.
- Book text is not written to the database.
- Service records remain in the database: languages, size in characters, job status and date, and the monthly translation counter. The content of a book cannot be reconstructed from them.
Purchases
Payment is handled by Google Play; we do not see your card details. The server checks with Google that a purchase has been paid for and stores a hash of the purchase token, not the token itself.
Security
Data is transmitted to the server only over a secure HTTPS connection. Installation identifiers and purchase tokens are stored as hashes. Book text is not written to the database and is deleted within the periods stated above.
AI provider
Book text is processed by Anthropic (Claude). Its terms for storing and using data: https://www.anthropic.com/legal/privacy.
Deleting data
Uninstalling the app erases all data on the device. Your account and everything linked to it on the server are deleted in the app: Profile → “Delete account”. A request to delete service records can also be sent to alex2018mosk@gmail.com.
Children
The app is not intended to collect data from children and does not ask for age.
Changes
We will announce changes to this policy on this page and in the app.