books
2026A native iPhone reader for PDF and EPUB. Library, notes, study cards, and a model on the passage you select.
- Year
- 2026
- Stack
books is a reader for the iPhone. The icon on the home screen says Reader. Open a PDF or an EPUB, and the file stays on the phone.
Five tabs
- Library — import from Files. The app keeps its own copy.
- Reader — PDFKit for a PDF, a composed page for an EPUB. The page has a theme. Leave and come back to the same place.
- Notebook — bookmarks and notes, each one a door back to the passage.
- Deck — cards from what you marked.
- Learning — the vocabulary card in play, and how far each book has gone.
A selection
Long-press a sentence. The bar is Define, Translate, Explain, Summary, Note.
The model is a setting in the app.
- Apple Intelligence, on the device.
- ChatGPT and Grok, through the account you already have. You sign in with a device code. The token sits in the Keychain.
- DeepSeek and MiMo, if you paste a key. Those two bill as API calls.
Spotlight can open a book or a note.
On the machine
SwiftUI and SwiftData. I run it from the Xcode project.