# π ~ Pi Fun App. vs Pi Recall 100

The clearest difference is in-app purchases: π ~ Pi Fun App. at none against Pi Recall 100's 1. Pi Recall 100's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Pi Recall 100 sells 1 one-off in-app purchase. π ~ Pi Fun App. asks for nothing beyond the download.

## The numbers

| Metric | π ~ Pi Fun App. | Pi Recall 100 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 days | — |
| Size | 17 MB | 52 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ryo Tsudukihashi](https://appshunter.io/developer/1320583602) | [MITSURU ADACHI](https://appshunter.io/developer/6794788162) |

## 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


### Pi Recall 100

[App page](https://appshunter.io/ios/app/pi-recall-100/id6796900142)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100-Digit Challenge Premium | $2.99 | one-time |


## Frequently asked questions

### Is π ~ Pi Fun App. free?

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

### Is Pi Recall 100 free?

Pi Recall 100 is free to download, with in-app purchases available.

### Do π ~ Pi Fun App. or Pi Recall 100 have ads?

π ~ Pi Fun App. shows ads; Pi Recall 100 does not.

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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.*