Use cases

Practical guides for getting more out of the books and documents you already have — what each approach can do, how to set it up, and where its limits are.

These pages are organised around a task rather than a menu item: studying a textbook, checking what a report actually says, keeping up with a long series. Each one links to the user guide for step-by-step details.

Athena does three things. Read: EPUB, PDF and a dozen other formats, offline, with progress stored as an exact position inside the chapter so it survives a new device or a different font size. Listen: read-aloud with the device’s own speech engine by default — free, offline, with sentence highlighting in EPUBs. Ask: questions about one item, a shelf or the whole library, with answers that cite the passage. Each page below covers one concrete way to use them.

Ask AI about your own books, and see where each answer came from

Ask questions about books and PDFs you import — one title, a shelf or your whole library — and get answers that cite the passage, so you can check them.