# CombiPerm Calculator by CS vs Statistics & Probability Tutor

The clearest difference is ads: Statistics & Probability Tutor at none against CombiPerm Calculator by CS's shown. Statistics & Probability Tutor also leads on iOS requirement (18.2 vs 26.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. CombiPerm Calculator by CS sells 1 one-off in-app purchase and Statistics & Probability Tutor sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | CombiPerm Calculator by CS | Statistics & Probability Tutor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 10 days |
| Size | 12 MB | 48 MB |
| Requires iOS | 26.0 | **18.2** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) | [ByteCraft Solutions](https://appshunter.io/developer/1866155956) |

## What reviewers say

### CombiPerm Calculator by CS

[App page](https://appshunter.io/ios/app/combiperm-calculator-by-cs/id6761089836)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $2.99 | one-time |


### Statistics & Probability Tutor

[App page](https://appshunter.io/ios/app/statistics-and-probability-tutor/id6767269528)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $4.99 | per 7 days |
| Yearly Premium | $34.99 | per year |


## Frequently asked questions

### Is CombiPerm Calculator by CS free?

CombiPerm Calculator by CS is free to download, with in-app purchases available.

### Is Statistics & Probability Tutor free?

Statistics & Probability Tutor is free to download, with in-app purchases available.

### Do CombiPerm Calculator by CS or Statistics & Probability Tutor have ads?

CombiPerm Calculator by CS shows ads; Statistics & Probability Tutor 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.*