# Engine Sound vs RevLab

The clearest difference is ads: Engine Sound at none against RevLab's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Engine Sound sells 1 one-off in-app purchase and RevLab sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Engine Sound | RevLab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Size | 5 MB | 118 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yuya Suzuki](https://appshunter.io/developer/1882402717) | [Jehyung Lee](https://appshunter.io/developer/1862976985) |

## What reviewers say

### Engine Sound

[App page](https://appshunter.io/ios/app/engine-sound/id6816795459)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Engines | $0.99 | one-time |


### RevLab

[App page](https://appshunter.io/ios/app/revlab-engine-simulator/id6817417979)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RevLab Pro | $4.99 | one-time |


## Frequently asked questions

### Is Engine Sound free?

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

### Is RevLab free?

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

### Do Engine Sound or RevLab have ads?

RevLab shows ads; Engine Sound does not.

---

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