# Calculator Pro App vs Twin Calc

The clearest difference is in-app purchases: Calculator Pro App at none against Twin Calc's 1. Calculator Pro App also leads on device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

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

## The numbers

| Metric | Calculator Pro App | Twin Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 19 months | — |
| Size | 35 MB | 45 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mediology Software Private Limited](https://appshunter.io/developer/415229805) | [Hiroki Sugiyama](https://appshunter.io/developer/6778858327) |

## What reviewers say

### Calculator Pro App

[App page](https://appshunter.io/ios/app/calculator-pro-app/id6477689104)

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

**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 Calculator Pro App free?

Calculator Pro App 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 Calculator Pro App or Twin Calc have ads?

Neither Calculator Pro App 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.*