Reader privacy

Your reading belongs to you.

Katiopa can count broad activity such as free-book opens and reading-shelf saves, but only when you opt in. Those measurements are stored as daily totals, without names, account IDs, IP addresses, book passages, individual reading histories or advertising trackers.

Private annotations never leave your device automatically. Choosing not to participate has no effect on reading, downloading, your subscription or your purchases.

Measurement is optional and initially off.