# Optical Illusions vs Tricky Brain Test

The clearest difference is in-app purchases: Optical Illusions at none against Tricky Brain Test's 3. Tricky Brain Test's advantage is iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Tricky Brain Test sells 3 one-off in-app purchases. Optical Illusions asks for nothing beyond the download.

## The numbers

| Metric | Optical Illusions | Tricky Brain Test |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tricky-brain-test-fun-riddle/id6740096066/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 19 months | — |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 149 MB | 104 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Rocketship Studios LLP](https://appshunter.io/developer/1456752660) | [DoDo Game Co](https://appshunter.io/developer/1604391608) |

## 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


### Tricky Brain Test

[App page](https://appshunter.io/ios/app/tricky-brain-test-fun-riddle/id6740096066)

Engage your mind with clever riddles and hidden object challenges. This free puzzle game tests your common sense and problem-solving skills with unique levels. Enjoy an addictive brain-teasing experience offline or with friends.

**Highlights:** Clever riddles, Hidden object tasks, Hints provided, Offline gameplay, Enhances critical thinking, Problem-solving skills

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $2.99 | one-time |
| Bundle | $4.99 | one-time |
| Hints | $9.99 | one-time |


## Frequently asked questions

### Is Optical Illusions free?

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

### Is Tricky Brain Test free?

Tricky Brain Test is free to download, with in-app purchases available.

### Do Optical Illusions or Tricky Brain Test have ads?

Both Optical Illusions and Tricky Brain Test show ads.

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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.*