# ExperimentA vs CombiPerm Calculator by CS

The clearest difference is in-app purchases: ExperimentA at none against CombiPerm Calculator by CS's 1. ExperimentA also leads on ads (none vs shown) and iOS requirement (15.1 vs 26.0). On price and device support there is nothing between them.

Both are free to download. CombiPerm Calculator by CS sells 1 one-off in-app purchase. ExperimentA asks for nothing beyond the download.

## The numbers

| Metric | ExperimentA | CombiPerm Calculator by CS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | — |
| Size | 42 MB | 12 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GUSTAVO A LUJAN MORENO](https://appshunter.io/developer/1887093181) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### ExperimentA

[App page](https://appshunter.io/ios/app/experimenta/id6760971130)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is ExperimentA free?

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

### Is CombiPerm Calculator by CS free?

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

### Do ExperimentA or CombiPerm Calculator by CS have ads?

CombiPerm Calculator by CS shows ads; ExperimentA 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.*