# Pay Cat Learn vs π ~ Pi Fun App.

The clearest difference is ads: Pay Cat Learn at none against π ~ Pi Fun App.'s shown. π ~ Pi Fun App.'s advantage is update cadence (every 2 days vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Pay Cat Learn ships an update fortnightly, π ~ Pi Fun App. every 2 days. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Pay Cat Learn | π ~ Pi Fun App. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 days** |
| Size | 50 MB | 17 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Emily Sudduth](https://appshunter.io/developer/1721274803) | [Ryo Tsudukihashi](https://appshunter.io/developer/1320583602) |

## What reviewers say

### Pay Cat Learn

[App page](https://appshunter.io/ios/app/pay-cat-learn/id6502670021)

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Pay Cat Learn free?

Pay Cat Learn is free to download, with no in-app purchases.

### Is π ~ Pi Fun App. free?

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

### Do Pay Cat Learn or π ~ Pi Fun App. have ads?

π ~ Pi Fun App. shows ads; Pay Cat Learn does not.

### Which is updated more often, Pay Cat Learn or π ~ Pi Fun App.?

Pay Cat Learn ships an update fortnightly, and π ~ Pi Fun App. every 2 days. Most recently, Pay Cat Learn was updated on October 16, 2026 and π ~ Pi Fun App. on October 14, 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.*