# VIIO vs Sudoku Solver Realtime Camera

The clearest difference is review sentiment: VIIO at 68% against Sudoku Solver Realtime Camera's 19%. VIIO also leads on rating (4.7 vs 3.4) and ads (none vs shown). On price, in-app purchases, monetization model 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 and Sudoku Solver Realtime Camera sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

VIIO holds the better App Store score, 4.7 against 3.4. That said, the two scores are not equally well evidenced: VIIO has 1.2K ratings behind it against 43, so its average is the more settled of the two. Written reviews point the same way: 68% of VIIO's written reviews are positive against 19% of Sudoku Solver Realtime Camera's.

VIIO ships an update every 9 days, Sudoku Solver Realtime Camera monthly. Both last shipped on October 15, 2026.

## The numbers

| Metric | VIIO | Sudoku Solver Realtime Camera |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.2K ratings)](https://appshunter.io/ios/app/viio-text-reader/id1570401477/reviews)** | [3.4 (43 ratings)](https://appshunter.io/ios/app/sudoku-solver-realtime-camera/id1608023307/reviews) |
| Number of ratings | **1.2K** | 43 |
| Positive reviews | **68.4% of reviews** | 19.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 124 MB | 33 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Otonye Bestman](https://appshunter.io/developer/1466177310) | [小健 赵](https://appshunter.io/developer/1521832312) |

## 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


### Sudoku Solver Realtime Camera

[App page](https://appshunter.io/ios/app/sudoku-solver-realtime-camera/id1608023307)

Instantly solve Sudoku puzzles using your device's camera or by selecting a photo. It identifies invalid boards, provides hints, and checks your final solution. Supports various Sudoku sizes and offers different solving modes.

**Highlights:** Real-time camera solving, Photo import solving, Error checking for invalid boards, Hinting for next move, Supports 9x9 and 4x4 boards, Handwritten number recognition

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Subscription | $1.99 | per 7 days |
| Monthly Premium Subscription | $3.99 | per month |
| Annual Premium Subscription | $17.99 | per year |
| Remove ads. | $39.99 | one-time |


## Frequently asked questions

### Is VIIO free?

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

### Is Sudoku Solver Realtime Camera free?

Sudoku Solver Realtime Camera is free to download, with in-app purchases available.

### Which has better reviews, VIIO or Sudoku Solver Realtime Camera?

VIIO is rated higher. VIIO averages 4.7 out of 5 from 1.2K ratings, while Sudoku Solver Realtime Camera averages 3.4 from 43 ratings.

### Do VIIO or Sudoku Solver Realtime Camera have ads?

Sudoku Solver Realtime Camera shows ads; VIIO does not.

### Which is updated more often, VIIO or Sudoku Solver Realtime Camera?

VIIO ships an update every 9 days, and Sudoku Solver Realtime Camera monthly. Most recently, VIIO was updated on October 15, 2026 and Sudoku Solver Realtime Camera on October 15, 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.*