Privacy Policy
Kairon is a reading app that prioritizes processing on your device. Your book files are uploaded to a server only if you explicitly enable cloud book storage.
Data we process
When you sign in or enable sync, Kairon may process account information, sign-in sessions, reading progress, bookmarks, notes, and community content you choose to post.
When you create a Kairon account with email or an OAuth provider, your date of birth is used to check age eligibility and is not stored in your Kairon profile. OAuth uses a short-lived eligibility code in the URL in place of your date of birth. If you create an account on Bluesky or another PDS, that service handles your date of birth under its own policy.
AI and book content
Kairon sends source text to an AI provider only when you choose to use an AI feature and have configured a provider. The app does not generate summaries from book titles or metadata when text or OCR is unavailable.
Sharing and security
Kairon does not sell personal data. Infrastructure, authentication, sync, and content processing providers receive the data they need to deliver the relevant feature. Public Bluesky posts are handled under Bluesky’s policy or the policy of your chosen account server.
Analytics and diagnostics
You can separately enable or disable usage analytics, crash reporting, and session recording in privacy settings. When enabled, Firebase, Mixpanel, or Microsoft Clarity may receive device information, installation IDs, usage events, or diagnostic data depending on your choices. On-device text recognition may also send diagnostics under the Google ML Kit policy.
Your rights
You can use the reader offline without an account and revoke sign-in sessions in settings. Use the account and data deletion page to submit a request. Contact support with questions about your data.