# Optical Illusions vs CatchSwipe

The clearest difference is in-app purchases: Optical Illusions at none against CatchSwipe's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. CatchSwipe sells 1 one-off in-app purchase. Optical Illusions asks for nothing beyond the download.

Optical Illusions ships an update every 19 months, CatchSwipe every 21 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Optical Illusions | CatchSwipe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/catchswipe/id1630926693/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 19 months** | Every 21 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 149 MB | 9 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Rocketship Studios LLP](https://appshunter.io/developer/1456752660) | [Rustam Nasredinov](https://appshunter.io/developer/1535206386) |

## 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


### CatchSwipe

[App page](https://appshunter.io/ios/app/catchswipe/id1630926693)

Test your reflexes in this fast-paced game with a stylish design and engaging gameplay. It offers four distinct levels and humorous sound effects to keep you entertained. Native help is included to guide you through the experience.

**Highlights:** Four game levels, Stylish design, Funny game sounds, Engaging gameplay, Native help included

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RemoveAds | $0.99 | one-time |


## Frequently asked questions

### Is Optical Illusions free?

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

### Is CatchSwipe free?

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

### Do Optical Illusions or CatchSwipe have ads?

Both Optical Illusions and CatchSwipe show ads.

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

Optical Illusions ships an update every 19 months, and CatchSwipe every 21 months. Most recently, Optical Illusions was updated on November 3, 2026 and CatchSwipe on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*