# Critical Value Calculator vs MtStMacrina

The clearest difference is update cadence: MtStMacrina at monthly against Critical Value Calculator's every 43 months. Critical Value Calculator's advantage is iOS requirement (10.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Critical Value Calculator ships an update every 43 months, MtStMacrina monthly. Both last shipped on October 27, 2026.

## The numbers

| Metric | Critical Value Calculator | MtStMacrina |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 43 months | **Monthly** |
| Size | 25 MB | 17 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ahmad Sattar](https://appshunter.io/developer/1458483953) | [Alan Laick](https://appshunter.io/developer/1637872668) |

## What reviewers say

### Critical Value Calculator

[App page](https://appshunter.io/ios/app/critical-value-calculator/id1612016227)

**In-app purchases:** none


### MtStMacrina

[App page](https://appshunter.io/ios/app/mtstmacrina/id1637872666)

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

**In-app purchases:** none


## Frequently asked questions

### Is Critical Value Calculator free?

Critical Value Calculator is free to download, with no in-app purchases.

### Is MtStMacrina free?

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

### Do Critical Value Calculator or MtStMacrina have ads?

Neither Critical Value Calculator nor MtStMacrina shows ads.

### Which is updated more often, Critical Value Calculator or MtStMacrina?

Critical Value Calculator ships an update every 43 months, and MtStMacrina monthly. Most recently, Critical Value Calculator was updated on October 27, 2026 and MtStMacrina on October 27, 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.*