# iFactor vs Optical Illusions

The clearest difference is ads: iFactor at none against Optical Illusions's shown. On price, update cadence, 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.

iFactor ships an update every 13 months, Optical Illusions every 19 months. The most recent releases landed on October 18, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | iFactor | Optical Illusions |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 13 months** | Every 19 months |
| Monetization | — | Ad-supported |
| Size | 58 MB | 149 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [10101 Software](https://appshunter.io/developer/424227132) | [Rocketship Studios LLP](https://appshunter.io/developer/1456752660) |

## What reviewers say

### iFactor

[App page](https://appshunter.io/ios/app/ifactor-multiplication-game/id1077954845)

**In-app purchases:** none


### 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


## Frequently asked questions

### Is iFactor free?

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

### Is Optical Illusions free?

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

### Do iFactor or Optical Illusions have ads?

Optical Illusions shows ads; iFactor does not.

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

iFactor ships an update every 13 months, and Optical Illusions every 19 months. Most recently, iFactor was updated on October 18, 2026 and Optical Illusions on October 13, 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.*