# π ~ Pi Fun App. vs π Challenge

The clearest difference is ads: π Challenge at none against π ~ Pi Fun App.'s shown. π Challenge also leads on iOS requirement (13.0 vs 17.0). π ~ Pi Fun App.'s advantage is update cadence (daily vs every 9 months). On price, 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.

π ~ Pi Fun App. ships an update daily, π Challenge every 9 months. The most recent releases landed on September 6, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | π ~ Pi Fun App. | π Challenge |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Daily** | Every 9 months |
| Size | 17 MB | 29 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ryo Tsudukihashi](https://appshunter.io/developer/1320583602) | [Warashibe Tech LLC](https://appshunter.io/developer/1567747524) |

## What reviewers say

### π ~ Pi Fun App.

[App page](https://appshunter.io/ios/app/pi-fun-app/id6566185298)

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

**In-app purchases:** none


### π Challenge

[App page](https://appshunter.io/ios/app/challenge/id6743357759)

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

**In-app purchases:** none


## Frequently asked questions

### Is π ~ Pi Fun App. free?

π ~ Pi Fun App. is free to download, with no in-app purchases.

### Is π Challenge free?

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

### Do π ~ Pi Fun App. or π Challenge have ads?

π ~ Pi Fun App. shows ads; π Challenge does not.

### Which is updated more often, π ~ Pi Fun App. or π Challenge?

π ~ Pi Fun App. ships an update daily, and π Challenge every 9 months. Most recently, π ~ Pi Fun App. was updated on September 6, 2026 and π Challenge on September 24, 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.*