CastReader

CastReader turns any text into something you can both hear and understand.

Read Aloud — like a teacher pointing along
Turn photos, web pages, PDFs, EPUBs, and plain text into natural speech with one tap. Every word highlights as it's read and the page auto-scrolls, so your eyes and ears stay focused together. Finish an article on your commute; follow each word while practicing listening.

AI Explain — not just read, but understood
CastReader generates a spoken explanation and draws handwritten-style notes right on the original text — highlighting key points, circling terms, numbering steps. Listen and watch the annotations appear, like a tutor breaking it down beside you.

Capture anything
· Scan: point at a book, document, or screen — recognized on-device
· URL: open any web page to read aloud or explain
· Files: PDF / TXT / image / EPUB
· Paste: drop in text and start listening instantly

Made for
· Anyone who'd rather listen through articles, docs, and ebooks
· Language learners who want to follow along word by word
· Readers who need rest for their eyes or accessibility support
· People making the most of commutes, workouts, and chores

Subscription
Free daily read-aloud and explain quota. Upgrade to Pro for unlimited listening, unlimited explanations, all premium voices, and up to 3x speed.

English & Chinese, dark mode, background playback. History stays on your device — never uploaded.