# Exhaust Note vs RevLab

The clearest difference is in-app purchases: Exhaust Note at none against RevLab's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. RevLab sells 1 one-off in-app purchase. Exhaust Note asks for nothing beyond the download.

## The numbers

| Metric | Exhaust Note | RevLab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/exhaust-note-engine-sound-sim/id6797558385/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 90.9% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 days | — |
| Monetization | Ad-supported | — |
| Size | 13 MB | 118 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [seihee han](https://appshunter.io/developer/629944907) | [Jehyung Lee](https://appshunter.io/developer/1862976985) |

## What reviewers say

### Exhaust Note

[App page](https://appshunter.io/ios/app/exhaust-note-engine-sound-sim/id6797558385)

This app synthesizes realistic engine exhaust sounds from scratch, based on the physics of firing orders and cylinder layouts. Explore various engine configurations, adjust muffler settings, and experience dynamic features like pops, bangs, and flames. It also includes a detailed 3D engine animation and driving simulation elements.

**Highlights:** Real-time synthesized exhaust sounds, Adjustable muffler settings, Diverse engine presets, Pop, bang, and flame effects, Living 3D engine animation, Driving feel simulation, Tunnel reverb mode

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

**In-app purchases:** none


### 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 Exhaust Note free?

Exhaust Note is free to download, with no in-app purchases.

### Is RevLab free?

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

### Do Exhaust Note or RevLab have ads?

Both Exhaust Note and RevLab show 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.*