Privacy policy: https://manatan.com/privacy

Manatan uses account and authentication information to connect your learning data. Features you use may send vocabulary, lookup terms, selected website text, captured images/audio, public video metadata, and watch activity to Manatan or the selected dictionary/audio service. Local dictionary libraries stay in your browser unless you choose an app or account-backed workflow. Custom publishers are contacted only when configured and permitted. Manatan does not sell your personal data. See the linked policy for retention, account deletion, and contact information.