Readr AI is a free AI ebook reader for iPhone and iPad that combines reading, listening, and book-based questions in one focused experience. It supports DRM-free EPUB, PDF, plain-text, and Markdown files, letting readers ask questions, listen aloud, highlight passages, and build drafts without subscriptions or accounts at no cost today. 

AI assistance that stays with the book 

Readr AI’s Ask the Book feature answers questions using pages you have read, with a Whole Book option for broader context. It can also provide spoiler-free recaps, clearly distinguish outside information, and turn highlights into editable Markdown drafts. The interface adds useful layouts, themes, search, bookmarks, and notes for everyday reading. 

Privacy is a major strength: it says there is no usage tracking, while books, highlights, notes, and questions remain on-device. AI questions go directly to your chosen provider, requiring your own Anthropic, OpenAI, or OpenRouter account. The main con is that AI features require separate provider access, adding setup costs. 

A strong choice for curious readers 

Overall, Readr is an appealing option for readers who want AI assistance without giving up control of their library. Its local narration, flexible file support, thoughtful reading tools, and open-source design make it especially attractive. For readers comfortable bringing their own AI provider, Readr offers an impressive tool.