# PCI Risk Calculator vs Oakstone CMEssentials

PCI Risk Calculator and Oakstone CMEssentials are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | PCI Risk Calculator | Oakstone CMEssentials |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Size | 15 MB | 82 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [The University of Michigan](https://appshunter.io/developer/380339599) | [Oakstone Publishing, LLC](https://appshunter.io/developer/619447897) |

## What reviewers say

### PCI Risk Calculator

[App page](https://appshunter.io/ios/app/pci-risk-calculator/id6499375163)

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

**In-app purchases:** none


### Oakstone CMEssentials

[App page](https://appshunter.io/ios/app/oakstone-cmessentials/id6747255138)

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

**In-app purchases:** none


## Frequently asked questions

### Is PCI Risk Calculator free?

PCI Risk Calculator is free to download, with no in-app purchases.

### Is Oakstone CMEssentials free?

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

### Do PCI Risk Calculator or Oakstone CMEssentials have ads?

Neither PCI Risk Calculator nor Oakstone CMEssentials shows ads.

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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.*