# Sunao: Text to Speech — Read Aloud Docs, Books & PDFs

> Converts documents, web articles, and scanned pages into natural AI-powered audio. (iPhone/iPad app by TangoTree Labs LLP.)

- Source: https://appshunter.io/ios/app/sunao-text-to-speech/id6759792151 (this page in markdown: same URL + `.md`)
- Developer: [TangoTree Labs LLP](https://appshunter.io/developer/1852172475)
- Category: Education, Productivity
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.0 · 424 MB
- Languages: American English
- Released: 2026-05-17
- Data updated: 2026-09-07
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sunao-text-to-speech/id6759792151/reviews.md

## What is Sunao?

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

## Key features

- Reads PDFs, EPUBs, DOCX, TXT, and web articles aloud
- Scans printed pages into audio
- Pasted text read aloud
- Synced word highlighting
- Switch between Original PDF and Reader Mode
- Adjustable playback speed
- Multiple AI voices

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Speechily Premium | $9.99 | one-time |
| Sunao Premium | $29.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/sunao-text-to-speech/id6759792151/reviews.md

### 5/5 — Got me back to reading

*2026-06-12*

Really love the fact this this truly unlimited and no recurring monthly subscriptions

**Developer response:** Thank you for your support.

## Frequently asked questions about Sunao

### What file formats does Sunao support for text to speech?

Sunao can read aloud PDFs, EPUBs, Word documents (DOCX), plain text (TXT), and web articles. It can also convert scanned printed pages into audio.

### Can I adjust how Sunao reads text aloud?

Yes, you can customize the playback speed to match your pace and choose from multiple natural AI voices. Font, text size, and highlight style are also adjustable.

### Does Sunao have ads?

No, Sunao does not contain advertisements, providing an uninterrupted listening experience.

### How does Sunao help with reading accessibility?

Sunao is designed to assist users with dyslexia, ADHD, low vision, or anyone who prefers listening. Features like synced highlighting and customizable reading modes make content more accessible.

### What is the rating for Sunao?

Sunao has a high rating of 5.0 stars based on 2 user reviews.

### Is Sunao available on Android devices?

Currently, Sunao is supported on iPhone devices. Information regarding Android availability is not provided.

### How often is Sunao updated?

The latest version of Sunao was released on June 16, 2026, indicating recent development activity. Updates typically occur to improve features and fix bugs.

### What are the pricing details for Sunao?

Sunao is free to download and use, with optional in-app purchases available for additional features or content.

## Version history (last 5 releases)

### 1.3.17 — 2026-09-02

Unlimited reading, no token limit, improvements in PDF reading, more natural voice and bug fixes on this release.

### 1.3.16 — 2026-08-30

Unlimited reading, no token limit, improvements in PDF reading, more natural voice.

### 1.3.15 — 2026-08-26

Unlimited reading, no token limit, improvements in PDF reading, more natural voice.

### 1.3.14 — 2026-08-22

Unlimited reading, no token limit, improvements in PDF reading, more natural voice.

### 1.3.13 — 2026-08-21

Unlimited reading, no token limit, improvements in PDF reading, more natural voice.

## More apps by TangoTree Labs LLP

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All apps by TangoTree Labs LLP: https://appshunter.io/developer/1852172475

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*