# Optical Illusions vs Just Tap Fast

The clearest difference is in-app purchases: Optical Illusions at none against Just Tap Fast's 4. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Just Tap Fast sells 4 one-off in-app purchases. Optical Illusions asks for nothing beyond the download.

## The numbers

| Metric | Optical Illusions | Just Tap Fast |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 19 months | — |
| Monetization | Ad-supported | — |
| Size | 149 MB | 12 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Rocketship Studios LLP](https://appshunter.io/developer/1456752660) | [That Side Company LLC](https://appshunter.io/developer/1884466733) |

## 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


### Just Tap Fast

[App page](https://appshunter.io/ios/app/just-tap-fast/id6769942846)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Small Tip | $1.99 | one-time |
| Medium Tip | $3.99 | one-time |
| Large Tip | $4.99 | one-time |


## Frequently asked questions

### Is Optical Illusions free?

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

### Is Just Tap Fast free?

Just Tap Fast is free to download, with in-app purchases available.

### Do Optical Illusions or Just Tap Fast have ads?

Both Optical Illusions and Just Tap Fast show ads.

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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.*