Privacy Policy
Folioki is a reading app. It stores what you read and what you learn so that the same library and the same deck of flashcards are there on every device you sign in on. It has no advertising, no analytics SDKs and no tracking of any kind, and it does not sell or share your data with anyone.
What we store
- Your email address, so you have an account. If you sign in with Apple or Google we receive the address that provider gives us — including Apple's private relay address, if that is what you chose.
- The material you add: books, articles and pasted text, together with your reading position in each.
- Your notes and flashcards, their review history, and your learning settings.
- Your subscription tier and the identifier of the App Store transaction that granted it.
All of it lives in Amazon Web Services in Frankfurt (eu-central-1): book texts in S3, everything else in DynamoDB. Accounts are handled by Amazon Cognito.
What we never see
Payment details. Subscriptions are bought through the App Store; we receive a transaction signed by Apple and check its signature, and that is all. Your card never touches us.
Translation and AI
The instant translation under a tapped word is produced by Apple's on-device Translation framework. It does not leave your device and we never see it.
The three buttons below it — AI translation, grammar breakdown, and card draft — do send data: the word or phrase you selected and the sentence it appeared in are sent to Amazon Bedrock, in the same AWS region, and the model's answer comes back. Nothing else from the book is included, and the request is not used to train any model.
Those answers are cached and the cache is shared between users: the translation of a German word does not depend on who asked. The cache key is the phrase plus its sentence, and it holds no account identifier.
Logs
Server logs record that a request happened — which account, which operation, how many tokens a model call cost. They exist to enforce the plan limits and to keep the bill honest. AI logs are kept 90 days; everything else 7 days.
Children
Folioki is not directed at children under 13 and we do not knowingly collect their data.
Deleting your data
Write to [email protected] from the address you signed up with and we will delete the account and everything attached to it — library, texts, deck and review history. A subscription bought through the App Store is cancelled in your Apple account settings, not by us.
Changes
If this policy changes materially, the date at the top changes with it, and the app will point you here again.