# Optical Illusions vs Dalton PRO

The clearest difference is price: Optical Illusions at Free against Dalton PRO's $5.99. Optical Illusions also leads on iOS requirement (15.0 vs 17.4). Dalton PRO's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Optical Illusions is free to download; Dalton PRO costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Optical Illusions | Dalton PRO |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 19 months | — |
| Monetization | Ad-supported | — |
| Size | 149 MB | 2 MB |
| Requires iOS | **15.0** | 17.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Rocketship Studios LLP](https://appshunter.io/developer/1456752660) | [Krzysztof Guz](https://appshunter.io/developer/1463664836) |

## What reviewers say

### Optical Illusions

[App page](https://appshunter.io/ios/app/optical-illusionsbrain-teaser/id1555733337)

Engage with a collection of mind-bending visual puzzles designed to challenge your perception and cognitive skills. Explore numerous optical illusions that will test your brain power and visual acuity in a fun and engaging way.

**Highlights:** Hundreds of optical illusion challenges, Spot trick questions and hidden traps, Minimal design for illusion clarity, Time-limited challenges, Suitable for all ages, IQ training and mind games

**In-app purchases:** none


### Dalton PRO

[App page](https://appshunter.io/ios/app/dalton-pro/id6502391339)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Optical Illusions free?

Optical Illusions is free to download, with no in-app purchases.

### Is Dalton PRO free?

Dalton PRO costs $5.99, with no in-app purchases.

### Do Optical Illusions or Dalton PRO have ads?

Optical Illusions shows ads; Dalton PRO does not.

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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.*