# Optical Illusions vs UntangleAway

The clearest difference is update cadence: UntangleAway at monthly against Optical Illusions's every 19 months. UntangleAway also leads on iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support 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, UntangleAway monthly. The most recent releases landed on June 9, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Optical Illusions | UntangleAway |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 19 months | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 149 MB | 102 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Rocketship Studios LLP](https://appshunter.io/developer/1456752660) | [Barbara Reyes Talavera](https://appshunter.io/developer/1835148270) |

## 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


### UntangleAway

[App page](https://appshunter.io/ios/app/untangleaway/id6752520909)

**In-app purchases:** none


## Frequently asked questions

### Is Optical Illusions free?

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

### Is UntangleAway free?

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

### Do Optical Illusions or UntangleAway have ads?

Both Optical Illusions and UntangleAway show ads.

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

Optical Illusions ships an update every 19 months, and UntangleAway monthly. Most recently, Optical Illusions was updated on June 9, 2026 and UntangleAway on September 11, 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.*