# Optical Illusions vs Tapi Tapa

The clearest difference is in-app purchases: Optical Illusions at none against Tapi Tapa's 3. Optical Illusions also leads on iOS requirement (15.0 vs 17.6). Tapi Tapa's advantage is ads (none vs shown) and update cadence (daily vs every 19 months). On price and device support there is nothing between them.

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

Optical Illusions ships an update every 19 months, Tapi Tapa daily. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Optical Illusions | Tapi Tapa |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 19 months | **Daily** |
| Monetization | Ad-supported | — |
| Size | 149 MB | 65 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Rocketship Studios LLP](https://appshunter.io/developer/1456752660) | [Abdullah Alesmail](https://appshunter.io/developer/1872888466) |

## 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


### Tapi Tapa

[App page](https://appshunter.io/ios/app/tapi-tapa/id6761159959)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Coins | $0.99 | one-time |
| 500 Coins | $3.99 | one-time |
| 1000 Coins | $4.99 | one-time |


## Frequently asked questions

### Is Optical Illusions free?

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

### Is Tapi Tapa free?

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

### Do Optical Illusions or Tapi Tapa have ads?

Optical Illusions shows ads; Tapi Tapa does not.

### Which is updated more often, Optical Illusions or Tapi Tapa?

Optical Illusions ships an update every 19 months, and Tapi Tapa daily. Most recently, Optical Illusions was updated on October 13, 2026 and Tapi Tapa on October 15, 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.*