# Calculator+ Simple Math vs Twin Calc

The clearest difference is in-app purchases: Calculator+ Simple Math at none against Twin Calc's 1. Calculator+ Simple Math also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price and ads there is nothing between them.

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

## The numbers

| Metric | Calculator+ Simple Math | Twin Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Size | 19 MB | 45 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Space 64 LLC](https://appshunter.io/developer/1769185943) | [Hiroki Sugiyama](https://appshunter.io/developer/6778858327) |

## What reviewers say

### Calculator+ Simple Math

[App page](https://appshunter.io/ios/app/calculator-plus-simple-math/id6764523918)

**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+ Simple Math free?

Calculator+ Simple Math 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+ Simple Math or Twin Calc have ads?

Neither Calculator+ Simple Math nor Twin Calc shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*