Sunao: Text to Speech
Read Aloud Docs, Books & PDFs
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Sunao turns more than just PDFs into audio. Listen to EPUBs, Word documents, plain text, scanned pages, and web articles with natural AI voices designed for focused listening.
Import a file, scan a page, paste text, or drop in a web URL, then press play and follow along with synced highlighting. Switch between the original PDF and Reader Mode, jump to any passage with a tap, adjust speed, and keep going from where you left off.
Why people use Sunao:
• Listen to PDFs, EPUBs, DOCX, TXT, and web articles
• Scan printed pages and turn them into audio
• Paste or type text and hear it read aloud
• Follow along with synced word highlighting
• Switch between Original PDF and Reader Mode
• Tap any word or section to start listening from there
• Choose from multiple AI voices
• Adjust playback speed to match your pace
• Customize font, text size, and highlight style
• Organize your library and continue listening anytime
Sunao is built for readers who want more flexibility from text to speech, whether you are studying, commuting, multitasking, reducing screen fatigue, or making reading more accessible.
It is especially useful for long documents, articles, books, coursework, and everyday reading. It can also help users with dyslexia, ADHD, low vision, or anyone who prefers listening over reading.
Privacy Policy - https://sunao.tangotreelabs.com/privacy
TOS - https://sunao.tangotreelabs.com/terms
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Bug fixes and improvements
The developer, TangoTree Labs LLP, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
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
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- TangoTree labs LLP
- Size
- 469.8 MB
- Category
- Education
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Sunao Premium $49.99
- Speechily Premium $9.99
- Copyright
- © 2026 Tangotree Labs LLP