# Mathematical Playground Lite vs Optical Illusion Book

The clearest difference is in-app purchases: Mathematical Playground Lite at none against Optical Illusion Book's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Optical Illusion Book sells 1 one-off in-app purchase. Mathematical Playground Lite asks for nothing beyond the download.

## The numbers

| Metric | Mathematical Playground Lite | Optical Illusion Book |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (3 ratings)](https://appshunter.io/ios/app/mathematical-playground-lite/id1233002386/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 40.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 53 MB | 4 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jun Nakashima](https://appshunter.io/developer/1130820204) | [Mishima Design](https://appshunter.io/developer/373060551) |

## What reviewers say

### Mathematical Playground Lite

[App page](https://appshunter.io/ios/app/mathematical-playground-lite/id1233002386)

Explore three-dimensional shapes with this educational application. It aids in understanding and visualizing complex geometric forms, offering tools to manipulate and study them. This lite version provides access to all shapes and core functionalities.

**Highlights:** Explore 3D shapes, Visualize geometric forms, Cut and expand shapes, Receive shape data from full version, All shapes available

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Optical Illusion Book

[App page](https://appshunter.io/ios/app/optical-illusion-book/id6801408868)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Complete Collection | $14.99 | one-time |


## Frequently asked questions

### Is Mathematical Playground Lite free?

Mathematical Playground Lite is free to download, with no in-app purchases.

### Is Optical Illusion Book free?

Optical Illusion Book is free to download, with in-app purchases available.

### Do Mathematical Playground Lite or Optical Illusion Book have ads?

Neither Mathematical Playground Lite nor Optical Illusion Book shows 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.*