Privacy policy

Applies to the EinkReader Android app (package app.einkreader). Last updated: 19 October 2026.

Short version

All your books stay locally on your device. Syncing is optional and goes only through your own personal Google Drive; there is no other copy and no server of ours. EinkReader does not collect, sell or share your personal data. It has no ads and no analytics, and the developer has no server that receives your data.

Data stored on your device

The books you add, their covers, your reading positions and your display settings are stored only in the app's private storage on your device. They are removed when you delete a book or uninstall the app. The app asks for no access to your photos, contacts, location, microphone or camera. Books are added through the system file picker or the “Open with” command, so the app reads only files you choose.

Optional Google Drive sync

If you choose to sign in with Google, the app uses your Google account only for syncing between your own devices:

• It requests two permissions: access to the app's own hidden data folder in your Google Drive (the drive.appdata scope) and your e-mail address (to show which account is signed in and to keep each account's data separate).
• Into that folder it writes copies of the books you added and small files with your reading position and a random device identifier. The app cannot see or change any other file in your Drive.
• Sign-in tokens are stored only on your device. Data goes directly between your device and Google; the developer never receives it and cannot read it.
• You can sign out in the app at any time, and you can remove the app's data in your Google account settings (Security, Third-party apps and services, or Drive settings, Manage apps).

Google handles this data under Google's privacy policy. EinkReader's use of information received from Google APIs follows the Google API Services User Data Policy, including the Limited Use requirements.

Optional donations

The app can offer an optional donation. The payment is handled entirely by Google Play: the app and the developer do not see or store your card or payment details, and the developer receives only Google's payout statements. Nothing in the app depends on a donation.

Network use

The only network connections the app makes are to Google, for the optional sync and the optional donation described above. Without signing in, the app works fully offline.

Children

The app is a general-purpose reader and is not directed at children; it collects no data from anyone.

Changes and contact

If this policy changes, the new version and its date will be posted on this page. Questions: GitHub issues.