EbookConverter

EbookConverter wraps gryf/ebook-converter (a Calibre fork) to run natively on Android via Chaquopy.

Features:
- Convert between 20+ ebook formats directly on your phone
- Input: epub, mobi, azw3, azw4, docx, odt, fb2, html, htmlz, lrf, pdb, rtf, txt, djvu, chm, cbz, cbr
- Output: epub, mobi, azw3, docx, fb2, html, htmlz, lrf, oeb, txt, txtz
- Output profiles for Kindle, Kobo, Nook, iPad, and generic e-ink devices
- Metadata editing (title, authors, publisher)
- Font size and margin controls
- Dark mode support
- No internet required — all conversion runs locally

Limitations:
- PDF input/output not supported (requires poppler and PyQt5, unavailable on Android)

Licensed under GPL-3.0.