Privacy Policy for Readus

Last Updated: July 13, 2026

Thank you for using Readus ("App"). We respect your privacy and keep this policy simple. Readus is a reading and vocabulary learning app for iOS.

1. Information Stored on Your Device

The App stores information needed for its main features on your device, including:

This data is used only to provide the App's reading, translation, vocabulary, and practice features.

2. iCloud Sync

If iCloud is enabled on your device, some learning data may sync through Apple's iCloud/CloudKit service, including language pairs, vocabulary cards, translations, source sentences, and practice history.

This sync is provided by Apple. The App does not send your imported books to our server for iCloud sync.

3. AI Translations

When you request an AI translation, the App sends the selected text and its sentence context to OpenRouter.ai to generate the translation. The App does not send your entire book for AI translation.

Please do not select sensitive text for AI translation if you do not want that text to be sent to an AI service.

4. Subscriptions and Free AI Access

Payments and subscriptions are handled by Apple through the App Store.

To enable AI translations, the App may contact our server at api.readus.app. For this purpose, the App may send:

Our server uses this information only to verify access, prevent abuse, and issue limited AI access keys. Our server does not store your book text or AI translation requests.

5. Book Catalog and Downloads

The App may connect to a book catalog server to show public-domain books and download books or cover images that you choose. These requests may include the selected language and search text entered by you.

6. Third-Party Services

The App uses the following services to provide its features:

The App does not use advertising SDKs, tracking, or third-party analytics.

7. Data Retention and Deletion

Local data remains on your device until you delete it in the App or uninstall the App. iCloud-synced data follows your iCloud settings and Apple's iCloud behavior.

Some deleted language data may remain in the App's trash for up to 30 days so it can be restored, and then it may be permanently deleted.

Server-side technical records for AI access are kept only as long as needed to provide access, prevent abuse, and maintain the service. You can contact us to request deletion of server-side technical data related to you.

8. Security

We use reasonable security measures to protect the information handled by the App. AI access keys are stored securely on the device and encrypted on our server.

9. Age Rating

Readus is intended for users aged 17 and older. We do not knowingly collect personal information from users under 17.

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. If we make changes, we will update the "Last Updated" date above.

11. Contact Us

If you have any questions about this Privacy Policy, please contact us at info@mikebulgakov.name.