New: Listen to YouTube. Paste or share a public video link, then hear its available transcript with CastReader voices, synced highlighting, and automatic scrolling.
CastReader turns any text into something you can hear and understand.
LISTEN TO YOUTUBE — HEAR PUBLIC TRANSCRIPTS
Paste or share a public YouTube video link. When a public transcript is available, CastReader reads the caption text aloud with its own voices, synchronized highlighting, and automatic scrolling. CastReader does not play, download, save, or convert the original video or audio. Availability depends on the video’s public captions and your region.
READ ALOUD — STAY FOCUSED
Turn photos, web pages, PDFs, EPUBs, documents, and books into natural speech. Synchronized highlighting and automatic scrolling keep your eyes and ears on the same sentence while you study, commute, exercise, or rest your eyes.
AI EXPLAIN — GO BEYOND THE WORDS
CastReader creates and reads a clear explanation while handwritten-style annotations appear on the original: highlights for key points, circles around important terms, and numbered steps.
BRING YOUR OWN CONTENT
• Camera or photo: recognize text on-device
• Web: open a URL and start listening
• Files: PDF, EPUB, TXT, DOCX, and images
• Paste: turn copied text into speech instantly
CONNECT YOUR READING SERVICES
• Kindle and WeRead: connect your library and continue reading
• Google Play Books and Kobo: sync eligible shelf items, then read aloud or explain them page by page
• O’Reilly Learning: use a supported personal account or eligible institution/library access, sync eligible books from reading history, and listen to or explain long chapters
You use your own accounts and content access. Availability varies by provider, region, account, and institution. CastReader does not provide or sell book content.
BUILT FOR
• Readers who prefer to finish articles, documents, and ebooks by listening
• Language learners who want synchronized visual guidance
• Students and professionals working through dense material
• Anyone who needs eye relief or accessibility support
9 LANGUAGES
The interface and text-to-speech support English, Chinese, Japanese, Spanish, French, German, Brazilian Portuguese, Italian, and Hindi. Voice availability varies by language.
CASTREADER PRO
Use CastReader free every day. Upgrade to Pro for unlimited read-aloud time, unlimited AI explanations, all premium voices, and playback speeds up to 3x. Eligible new subscribers can try Pro free for 7 days.
Dark mode and background playback are supported. Photo text recognition happens on-device and photos are not uploaded. CastReader’s local reading history stays on your device. Connected services retain their own account and reading data under their respective policies.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
• Improved Kobo and Google Play Books sign-in, account connection, and library syncing, including fixes for missing books in larger libraries.
• Clearer loading and retry messages, with fixes for incorrect book counts during loading and some reader opening issues.
• More reliable read-aloud playback and Kindle page transitions, with better recovery from temporary network errors.
• Improved service connections in mainland China and reliability when creating voices.
Version 1.2.34
The developer, ohsame Inc, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Usage Data
Privacy practices may vary based, for example, on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Provider
Shanghai Baozi Information Technology Co., Ltd.
Size
56 MB
Category
Education
Compatibility
Requires iOS 17.6 or later.
iPhone Requires iOS 17.6 or later.
Mac Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.