# VIIO vs Tau by Turing Dream

The clearest difference is in-app purchases: Tau by Turing Dream at none against VIIO's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. VIIO sells 10 in-app purchases, starting at $2.99 per month. Tau by Turing Dream asks for nothing beyond the download.

VIIO ships an update every 9 days, Tau by Turing Dream every 6 days. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | VIIO | Tau by Turing Dream |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.2K ratings)](https://appshunter.io/ios/app/viio-text-reader/id1570401477/reviews)** | — |
| Number of ratings | **1.2K** | — |
| Positive reviews | 68.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 124 MB | 50 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Otonye Bestman](https://appshunter.io/developer/1466177310) | [Turing Dream](https://appshunter.io/developer/1779917404) |

## What reviewers say

### VIIO

[App page](https://appshunter.io/ios/app/viio-text-reader/id1570401477)

Transform written content into spoken audio with this app. Easily convert text from documents, PDFs, or copied content into a clear, audible format. Customize voice, speed, and pitch for a personalized listening experience.

**Highlights:** Text-to-speech conversion, Read aloud from documents and PDFs, Copy text for audio playback, Adjustable reading speed, Customizable voice options, Highlighting important sections

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus plan | $2.99 | per month |
| HD plan | $6.99 | per month |
| Human plan | $16.99 | per month |
| HD yearly plan | $59.99 | per year |
| 50,000 characters | $0.99 | one-time |
| 100,000 characters | $1.99 | one-time |
| 200,000 characters | $2.99 | one-time |
| 50,000 human characters | $3.99 | one-time |
| 100,000 human characters | $5.99 | one-time |
| 200,000 human characters | $10.99 | one-time |

**What reviewers like**

- 💡 Useful for reading and comprehension
- 👍 Easy to use and navigate
- 🚀 Efficient text-to-speech functionality
- 👍 Helpful for neurodiverse users

**What reviewers complain about**

- 🐛 Frequent crashes and stability issues
- 🔒 Concerns about paid subscription model
- 🔋 Complaints about character/word limits in free version
- 👎 Robotic or unnatural-sounding voices

**Reported bugs**

- App crashes after updates
- Inconsistent performance across devices
- Issues with text recognition and pronunciation

**Requested features**

- Ability to adjust reading speed
- Support for more languages and accents
- Improved PDF and document handling
- Integration with other reading/productivity apps


### Tau by Turing Dream

[App page](https://appshunter.io/ios/app/tau-by-turing-dream/id6738277444)

**In-app purchases:** none


## Frequently asked questions

### Is VIIO free?

VIIO is free to download, with in-app purchases available.

### Is Tau by Turing Dream free?

Tau by Turing Dream is free to download, with no in-app purchases.

### Do VIIO or Tau by Turing Dream have ads?

Neither VIIO nor Tau by Turing Dream shows ads.

### Which is updated more often, VIIO or Tau by Turing Dream?

VIIO ships an update every 9 days, and Tau by Turing Dream every 6 days. Most recently, VIIO was updated on November 3, 2026 and Tau by Turing Dream on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*