Manage your library and understand sync
On your device or browser: imported books, reading progress, highlights and pen annotations, flashcards, streaks and statistics, and app settings.
In your online account: your profile, the store books you have saved or bought, your reviews, and daily AI usage counters.
What sync covers
With Settings → Sync turned on (signed in), your notes, highlights, bookmarks, flashcards, dictionary, collections, saved passages, canvases, research workspaces and voice notes follow you to your other devices. Book files, reading positions and pen marks stay on the device where you made them. Without Sync, everything stays local, and deleting the app or clearing browser data removes it.
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