随阅

Read freely, listen endlessly.

HandyReader is a free, open-source e-book and audiobook reader for Android. It supports a wide range of formats, features an offline neural AI text-to-speech engine, deep Material You customization, and keeps all your data on your device.

Features

📚 Multi-Format Reader Read e-books and listen to audiobooks in one app. ・E-books: EPUB, MOBI, AZW, AZW3, FB2, TXT, Markdown, HTML, PDF ・Audiobooks: MP3, M4A, AAC (powered by Media3/ExoPlayer) ・Native C++ parsing engine (libmobi, libxml2, CSSParser) for speed and fidelity

🎯 Offline AI Text-to-Speech The standout feature. Listen to any book with natural, neural-network voices — fully offline, no internet required. ・Three engines: Offline Neural AI (sherpa-onnx), Edge TTS (online), System TTS (fallback) ・Background playback with notification controls ・Adjustable speed and pitch, sleep timer, chapter skipping ・Downloadable voice models for multiple languages

🎨 Material You Design & Deep Customization ・Dynamic colors on Android 12+ (Material You wallpaper-based theming) ・12 color schemes, 11 reading themes ・Custom reading backgrounds (solid colors or gallery images) ・Three font sources: system fonts, downloadable catalog fonts, or import your own

📝 Annotations & Notes ・Highlights, underlines, and notes with custom colors ・In-book search and annotation filtering ・Dedicated notes browser

📖 OPDS Online Catalogs ・Browse and download books from OPDS 1.x online catalogs ・Authentication support (username/password) ・Built-in public catalogs + add your own

🃏 Quote Cards Generate beautiful, shareable quote cards from selected text. ・5 styles: Minimal White, Dark Night, Parchment, Cover Poster, Big Quote ・4 aspect ratios (3:4, 1:1, 9:16, 4:5) ・Save to gallery or share directly

📊 Reading Statistics ・Daily, total, and per-book reading time ・Reading streaks (current & longest) ・Reading habits heatmap ・Progress tracking (not started / in progress / finished)

🗂️ Smart Library ・Unlimited shelves ・Grid and list layouts ・Filter by status, file type, last opened, title, or progress ・Sort and organize large collections

🔤 Dictionary & Translation ・Built-in dictionary (WordNet, ECDICT, and more) ・Online AI translation (Meta m2/m100 model) ・Lookup history ・Integration with external dictionary apps

🔒 Privacy First ・All data stored locally on your device ・No third-party analytics or tracking ・Fully open source under GPLv3

💾 Backup & Restore ・Export/import your reading data (ZIP) ・Includes progress, annotations, notes, bookmarks, shelves, statistics, and preferences ・Content-hash-based smart merging across devices