# Optical Illusions vs Circle

The clearest difference is review sentiment: Circle at 98% against Optical Illusions's 0%. Circle also leads on ads (none vs shown) and update cadence (every 2 days vs every 19 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Optical Illusions ships an update every 19 months, Circle every 2 days. The most recent releases landed on October 13, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Optical Illusions | Circle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (16 ratings)](https://appshunter.io/ios/app/circle-have-fun-and-create/id6749002621/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | 0.0% of reviews | **98.2% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 19 months | **Every 2 days** |
| Monetization | Ad-supported | **Free** |
| Size | 149 MB | 349 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Rocketship Studios LLP](https://appshunter.io/developer/1456752660) | [Liliya Fedchenko](https://appshunter.io/developer/1828427645) |

## 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


### Circle

[App page](https://appshunter.io/ios/app/circle-have-fun-and-create/id6749002621)

Experience a revolutionary game with intuitive controls and gradually increasing difficulty. Unleash your creativity by building your own levels, games, and applications using a unique, no-code language. Share your creations and explore those made by others.

**Highlights:** Revolutionary game component, Intuitive hand controls, Gradual difficulty increase, Level editor, Hi-Ci language for creation, Shareable creations

**In-app purchases:** none


## Frequently asked questions

### Is Optical Illusions free?

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

### Is Circle free?

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

### Do Optical Illusions or Circle have ads?

Optical Illusions shows ads; Circle does not.

### Which is updated more often, Optical Illusions or Circle?

Optical Illusions ships an update every 19 months, and Circle every 2 days. Most recently, Optical Illusions was updated on October 13, 2026 and Circle on October 17, 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.*