# CNau vs Probability Theory Foundations

The clearest difference is in-app purchases: Probability Theory Foundations at none against CNau's 1. Probability Theory Foundations also leads on iOS requirement (15.1 vs 18.6). On price, ads and device support there is nothing between them.

Both are free to download. CNau sells 1 one-off in-app purchase. Probability Theory Foundations asks for nothing beyond the download.

## The numbers

| Metric | CNau | Probability Theory Foundations |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 24 MB | 38 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rizka Reza Pahlevi](https://appshunter.io/developer/1843548137) | [AFTW LLC](https://appshunter.io/developer/1886356149) |

## What reviewers say

### CNau

[App page](https://appshunter.io/ios/app/cnau/id6753331497)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Support CNau | $4.99 | one-time |


### Probability Theory Foundations

[App page](https://appshunter.io/ios/app/probability-theory-foundations/id6773734025)

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

**In-app purchases:** none


## Frequently asked questions

### Is CNau free?

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

### Is Probability Theory Foundations free?

Probability Theory Foundations is free to download, with no in-app purchases.

### Do CNau or Probability Theory Foundations have ads?

Neither CNau nor Probability Theory Foundations shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*