# Calculation Machine vs Twin Calc

The clearest difference is in-app purchases: Calculation Machine at none against Twin Calc's 1. Calculation Machine also leads on iOS requirement (12.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Twin Calc sells 1 one-off in-app purchase. Calculation Machine asks for nothing beyond the download.

## The numbers

| Metric | Calculation Machine | Twin Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 25 MB | 45 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [RECEP OGUZHAN SENOGLU](https://appshunter.io/developer/1726731806) | [Hiroki Sugiyama](https://appshunter.io/developer/6778858327) |

## What reviewers say

### Calculation Machine

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Twin Calc

[App page](https://appshunter.io/ios/app/twin-calc-two-calculators/id6807615879)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO | $3.99 | one-time |


## Frequently asked questions

### Is Calculation Machine free?

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

### Is Twin Calc free?

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

### Do Calculation Machine or Twin Calc have ads?

Neither Calculation Machine nor Twin Calc 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.*