An ebook and audiobook reader for Android, iPhone and iPad. EPUB, PDF, MOBI, comics and web serials (via RSS) on one shelf, plus 20,000+ free public-domain audiobooks. Rook AI answers "who is this again?" from only the pages you've read, so it can't spoil anything. Your shelf syncs free across Android and iOS. Pro adds exact-page, highlight and note sync and Rook AI (your own key or credits) for $8.99 once. No subscription.