EbookConverter

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

Features:
• Convert between popular ebook formats (epub, mobi, azw3, docx, fb2, …) directly on your phone
• Auto input: epub, mobi, azw3, docx, odt, fb2, html, htmlz, lrf, pdb, rtf, txt, md, markdown, pdf, kfx
• Auto output: epub, kfx, mobi, azw3, docx, fb2, htmlz, lrf, md, txt, txtz
• Settings for Auto, Calibre, or direct boko conversion, with backend-specific format choices
• Auto combines Calibre and boko through intermediate EPUBs for KFX input and KFX/Markdown output
• Direct boko input: epub, kfx, azw3, mobi; output: epub, kfx, azw3, md
• Cancel conversions and discard temporary batch outputs without changing original books
• Clear all selected books or tap session history to select them again
• Output profiles for Kindle, Kobo, Nook, iPad, and generic e-ink devices
• Edit EPUB, AZW3 and MOBI metadata (title, authors, publisher, comments) without conversion
• Font size and margin controls
• Dark mode support
• No internet required — all conversion runs locally

Limitations:
• PDF input supports text-based PDFs only (scanned PDFs need OCR, unavailable on Android)
• PDF output not supported
• Calibre mode has no KFX input or KFX/Markdown output; direct boko mode has no Calibre conversion options

Licensed under GPL-3.0.