# Optical Illusions vs unseeing

The clearest difference is in-app purchases: Optical Illusions at none against unseeing's 1. unseeing's advantage is ads (none vs shown) and update cadence (every 3 months vs every 19 months). On price, device support and iOS requirement there is nothing between them.

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

Optical Illusions ships an update every 19 months, unseeing every 3 months. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Optical Illusions | unseeing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/unseeing/id6760433216/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 19 months | **Every 3 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 149 MB | 82 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 9+ |
| Developer | [Rocketship Studios LLP](https://appshunter.io/developer/1456752660) | [Justin Neuman](https://appshunter.io/developer/1859103444) |

## 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


### unseeing

[App page](https://appshunter.io/ios/app/unseeing/id6760433216)

Engage in a daily challenge of perception with a new optical illusion each day. Test your understanding of visual science and discover how your brain interprets reality. Share illusions with friends and explore over 70 puzzles based on real perceptual phenomena.

**Highlights:** One optical illusion per day, Commit to your perception, Discover the truth behind illusions, Challenge friends, Explore over 70 illusions, Learn about perceptual science

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| unseeing PRO | $4.99 | one-time |


## Frequently asked questions

### Is Optical Illusions free?

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

### Is unseeing free?

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

### Do Optical Illusions or unseeing have ads?

Optical Illusions shows ads; unseeing does not.

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

Optical Illusions ships an update every 19 months, and unseeing every 3 months. Most recently, Optical Illusions was updated on October 13, 2026 and unseeing on October 7, 2026.

---

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