Quire

Quire is a native Android EPUB reader for people who self-host

calibre-web.

It browses your library over OPDS, downloads books on demand, renders

them with Readium, and syncs reading progress (and later bookmarks) to

a small companion server you run yourself (Quire Server, included).

Features:

- OPDS catalog browsing and search

- EPUB reading with Readium (font, theme, line-height controls)

- Reading progress sync across devices via your own Postgres

- Multi-user from day one

- One credential: your existing calibre-web account

Privacy:

- No analytics, no crash reporting, no third-party SDKs

- Network calls go to your calibre-web and your sync server only

- Credentials stored in Android Keystore

Source code, server, and documentation:

https://github.com/vitofico/quire

Optional AI features (off by default): when your Quire Server administrator

configures an AI endpoint (such as a self-hosted Ollama or a third-party

provider) and you opt in from Settings, Quire shows generated book