Kios – An iOS e-reader app with kobo, kosync and OPDS support
Self-hosted ebook sync on iOS with Kobo and KOReader protocol support.

Tappable YouTube subtitles and Kokoro AI audio make this a strong Pleco alternative.
Chinese language learners
Pleco · Language Reactor · Zhongwen
https://apps.apple.com/us/app/hanzi-popup/id6739193193
Transform your Chinese reading with Hanzi Popup. Understand any character instantly — with Pinyin, definitions, HSK level, and AI pronunciation — without ever leaving the page. Whether you're studying for an HSK exam, reading Chinese news, or exploring the language for the first time, Hanzi Popup is here to make every word understandable.
New version of the app with many features for Chinese language reader.
- Redesigned Library — hero images, tags, categories, reading progress, and detail overview for every item. - Offline Reading — save any web bookmark to read without internet. - New Formats — EPub, Word, PowerPoint, and Markdown now supported. - Audio/Video Formats - Audio and Video with subtitle select supported. - YouTube and Bilibili - Popup word definition for YouTube and Bilibili video subtitles - PDF Reader — OCR-powered with tap-to-lookup and TTS word highlight. - Camera OCR — point at printed text, tap any word to look it up. - TTS Word Highlight — current spoken word highlighted in EPUBs, PDFs, and web articles. - Reader Mode — strip web pages to clean text via Defuddle or Readability.
Self-hosted ebook sync on iOS with Kobo and KOReader protocol support.
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