# Calculation Machine vs ProCalc

The clearest difference is in-app purchases: Calculation Machine at none against ProCalc's 4. Calculation Machine also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. ProCalc sells 4 one-off in-app purchases. Calculation Machine asks for nothing beyond the download.

## The numbers

| Metric | Calculation Machine | ProCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Monthly |
| Size | 25 MB | 34 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RECEP OGUZHAN SENOGLU](https://appshunter.io/developer/1726731806) | [Penquinzoo Limited](https://appshunter.io/developer/1551454365) |

## What reviewers say

### Calculation Machine

[App page](https://appshunter.io/ios/app/calculation-machine/id6476459597)

**Features:** macOS Compatibility

**In-app purchases:** none


### ProCalc

[App page](https://appshunter.io/ios/app/procalc-calculator-app/id6756341509)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Flat themes | $3.99 | one-time |
| Graphs and pdf export. | $3.99 | one-time |
| Unlock Neon themes | $4.99 | one-time |
| All  themes | $4.99 | one-time |


## Frequently asked questions

### Is Calculation Machine free?

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

### Is ProCalc free?

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

### Do Calculation Machine or ProCalc have ads?

ProCalc shows ads; Calculation Machine 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.*