# REVBOX vs Engine Sound

REVBOX and Engine Sound are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. REVBOX sells 2 in-app purchases, starting at $4.99 per month and Engine Sound sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | REVBOX | Engine Sound |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Size | 87 MB | 5 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Taizhi Wansi Technology Co., Ltd.](https://appshunter.io/developer/822018993) | [Yuya Suzuki](https://appshunter.io/developer/1882402717) |

## What reviewers say

### REVBOX

[App page](https://appshunter.io/ios/app/revbox/id6759547933)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Annual | $29.99 | per year |


### 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 |


## Frequently asked questions

### Is REVBOX free?

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

### Is Engine Sound free?

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

### Do REVBOX or Engine Sound have ads?

Neither REVBOX nor Engine Sound 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.*