| Reads | EPUB and PDF, paginated and hyphenated, justified or ragged right; MOBI, AZW3, Word, Pages, FB2, TXT and HTML are turned into books on the way in. PDFs pinch to zoom, and from iOS 27 show two pages side by side where there’s room. |
| Library | Files, or a whole folder such as a calibre library in iCloud Drive or Dropbox; Wi‑Fi from your computer, a web link, the Athene Bookstore for Project Gutenberg’s free classics and, in the US, DRM-free books to buy, an OPDS catalog, your Zotero library, or a calibre or calibre-web server you run, at home or over a VPN such as Tailscale, where Select brings down a stack of books, or whole authors, series and tags, at once. |
| Shelf | Sorted in your own order or by title, author, series or recently read, from the Sort button beside Search. Your own collections, and Browse pages for the shelf’s authors, calibre’s tags, its series in reading order, and its formats. About This Book for what a book is about, its series and its tags. A bookmark on the book you’re reading, and a Continue reading line under the Library’s title. Export Book for the book itself as a file: an EPUB, the one Athene made of a Pages or Word document included, or a PDF as it came. |
| Reading | White, Sepia, Night or a paper you mix. Any Google Font, size, four line spacings, three margin widths, an optional progress line. One column in portrait, two in landscape. Pages turn with a swipe or a tap, two fingers across a trackpad, or the arrow keys, the space bar and Page Up and Down, in PDFs too. Translate a passage with Apple’s translation. |
| Listen | Any book or PDF in English, French, Italian or Spanish read aloud by a natural voice on the device, with the screen locked; Apple’s Audrey, Federica and Emma too, once downloaded. In PDFs, scanned pages are read and pictures described, from the PDF’s own descriptions or, on iOS 27, by Apple Intelligence on the device. From 0.5x to 2.5x. A one-time download. |
| iPad | Tabs across the top, the Notebook in two columns, a page number on each page of a sideways spread, and Contents, Aa and the Owl beside their buttons. |
| iPhone Duo | Open, two pages across the fold with the buttons in a strip beside them, a note on the facing page and the Notebook in two halves. Half open and standing, the page on top and the controls and notes below. Closed, the outer screen reads like any iPhone. |
| Notebook | Every highlight, note and drawing from every book, with filters and search, and reflections, typed or drawn. A note exports as text or PDF, a book’s set at once, a PDF book with its marks on its pages. |
| Marks | Highlights and typed or drawn notes in books and PDFs alike, and bookmarks; ink on PDF pages, the table of contents, search across the book and a built-in dictionary. |
| Sync | iCloud Sync between your devices, off until you turn it on. KOReader sync through an Athene server you run: books, place, highlights, notes and bookmarks; through any other KOReader sync server, your place. Send to Calibre for highlights, progress and finished books, and calibre’s own highlights back. |
| Zotero | My Library and your groups, with search. A paper’s PDF or EPUB on your shelf, its highlights, underlines and notes in step with Zotero’s annotations both ways. Cite in APA, Chicago, Harvard, IEEE, MLA, Nature, Vancouver or any style on zotero.org. Files from your own WebDAV server. |
| The Owl | Apple Intelligence on the device, an Ollama server you run, or an API key you bring. |
| Extras | In Settings › Extras, each off until you turn it on: Tap Zones, to choose where a tap turns the page; Mystery Book, a die on the Library that picks your next read from your shelf; Blank Pages in the Notebook; More Drawing Tools; and on iPhone Duo, Cover When Folded, the book’s cover on the screen when you set it down shut. |
| Languages | English, French, Italian and Spanish. Athene follows the language your iPhone or iPad is set to. |
| Price | Free. Everything Athene does today stays free. |
| Requires | iOS 26 or iPadOS 26. iPhone, iPhone Duo and iPad. |