# Phy vs Crazy Red Ball and Walls

The clearest difference is ads: Phy at none against Crazy Red Ball and Walls's shown. Crazy Red Ball and Walls's advantage is iOS requirement (8.1 vs 13.0). 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.

Phy ships an update every 54 months, Crazy Red Ball and Walls every 37 months. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Phy | Crazy Red Ball and Walls |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 54 months | **Every 37 months** |
| Size | 2 MB | 65 MB |
| Requires iOS | 13.0 | **8.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Krishna Raj Salim](https://appshunter.io/developer/1638689285) | [Ruslan Goncharenko](https://appshunter.io/developer/934710362) |

## What reviewers say

### Phy

[App page](https://appshunter.io/ios/app/phy-stack/id949127355)

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

**In-app purchases:** none


### Crazy Red Ball and Walls

[App page](https://appshunter.io/ios/app/crazy-red-ball-and-walls/id1092082322)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Phy free?

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

### Is Crazy Red Ball and Walls free?

Crazy Red Ball and Walls is free to download, with no in-app purchases.

### Do Phy or Crazy Red Ball and Walls have ads?

Crazy Red Ball and Walls shows ads; Phy does not.

### Which is updated more often, Phy or Crazy Red Ball and Walls?

Phy ships an update every 54 months, and Crazy Red Ball and Walls every 37 months. Most recently, Phy was updated on October 17, 2026 and Crazy Red Ball and Walls on October 7, 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.*