# Sound Design vs RF Engineer's Calc

The clearest difference is device support: Sound Design at 3 against RF Engineer's Calc's 1. Sound Design also leads on iOS requirement (14.4 vs 16.1). On price, ads and in-app purchases there is nothing between them.

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

## The numbers

| Metric | Sound Design | RF Engineer's Calc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 10 months |
| Size | 1 MB | 43 MB |
| Requires iOS | **14.4** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Boonlune Sangso](https://appshunter.io/developer/1248199120) | [GRAHAM JOHN SMITH](https://appshunter.io/developer/1668396908) |

## What reviewers say

### Sound Design

[App page](https://appshunter.io/ios/app/sound-design/id1560283554)

**Features:** macOS Compatibility

**In-app purchases:** none


### RF Engineer's Calc

[App page](https://appshunter.io/ios/app/rf-engineers-calc/id1668396906)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sound Design free?

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

### Is RF Engineer's Calc free?

RF Engineer's Calc is free to download, with no in-app purchases.

### Do Sound Design or RF Engineer's Calc have ads?

Neither Sound Design nor RF Engineer's 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.*