# Crazy Fun Relax Challenge vs Bubble popop

The clearest difference is in-app purchases: Crazy Fun Relax Challenge at none against Bubble popop's 1. Crazy Fun Relax Challenge also leads on iOS requirement (13.1 vs 17.6). Bubble popop's advantage is ads (none vs shown) and update cadence (every 2 days vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Bubble popop sells 1 in-app purchase, starting at $9.99 per year. Crazy Fun Relax Challenge asks for nothing beyond the download.

Crazy Fun Relax Challenge ships an update every 3 months, Bubble popop every 2 days. The most recent releases landed on October 9, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Crazy Fun Relax Challenge | Bubble popop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 days** |
| Size | 121 MB | 14 MB |
| Requires iOS | **13.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [The Gamers Guild](https://appshunter.io/developer/1730530312) | [毅黎 秦](https://appshunter.io/developer/1828721550) |

## What reviewers say

### Crazy Fun Relax Challenge

[App page](https://appshunter.io/ios/app/crazy-fun-relax-challenge/id6740567786)

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

**In-app purchases:** none


### Bubble popop

[App page](https://appshunter.io/ios/app/bubble-popop/id6757692930)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Ultra-Super-Mega-Max VIP | $9.99 | per year |


## Frequently asked questions

### Is Crazy Fun Relax Challenge free?

Crazy Fun Relax Challenge is free to download, with no in-app purchases.

### Is Bubble popop free?

Bubble popop is free to download, with in-app purchases available.

### Do Crazy Fun Relax Challenge or Bubble popop have ads?

Crazy Fun Relax Challenge shows ads; Bubble popop does not.

### Which is updated more often, Crazy Fun Relax Challenge or Bubble popop?

Crazy Fun Relax Challenge ships an update every 3 months, and Bubble popop every 2 days. Most recently, Crazy Fun Relax Challenge was updated on October 9, 2026 and Bubble popop on October 4, 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.*