# LevLr — Compressor / Limiter AudioUnit

> Simple audio compressor and limiter plugin for music production. (iPhone/iPad app by Rob Jackson.)

- Source: https://appshunter.io/ios/app/levlr/id6743492710 (this page in markdown: same URL + `.md`)
- Developer: [Rob Jackson](https://appshunter.io/developer/1072346998)
- Category: Music, Entertainment
- Price: Free
- Rating: 5.00/5 from 5 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 12 MB
- Released: 2025-03-20
- Data updated: 2026-08-25
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/levlr/id6743492710/reviews.md

## What is LevLr?

LevLr Compressor / limiter Plugin (AUv3)

LevLr is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic or GarageBand.

Overview

The LevLr "leveller" is a super simple dynamics processor with just two modes and two controls. If you find tinkering with compression ratios, makeup gain and attack / decay times, confusing or time-consuming, you might like to give LevLr a try, especially as it's free!

Parameters

Active - Toggles the effect On or Off.

Mode - Changes between Comp (compressor) and Limit (limiter) mode. Typically you would use Comp on an individual track, and Limit on a master output.

In - Determines how hard you drive the compression "circuit". As you increase the gain, the compression effect will become more obvious, with an overall increase in perceived volume and "weight".

Out - Allows you to reduce the output in cases where you have the desired amount of compression, but the track is now too dominant in your mix. You generally don't need to adjust this unless your In setting is more than about 6dB.

With so few controls, it's pretty easy to dial-in LevLr to taste, but it also has three very simple presets to get you going:

Default - a general-purpose Comp setting that can help a track sit in the mix a bit better.
Track Compressor - this is heavier / more obvious compression, with a little gain compensation.
Master Limiter - this can work well on a master bus and makes everything seem LOUDER!

That's pretty much all there is to it, but for the technically minded...

The In value is basically the compression threshold, so for example 6dB means compression will kick-in somewhere around the -6dB level. The compression ratios used are 4:1 and 12:1 for Comp and Limit mode respectively. Automatic gain compensation is applied internally depending on the threshold and ratio. The attack time is extremely fast (close to 0ms) meaning that LevLr should handle just about anything you can throw at it without exceeding 0dB at its output.


Please do take a look at my other AudioUnits on the App Store if you can spare the time. Supporting paid apps allows me to release free ones as a little thankyou from time to time. For more info and support please visit:

www.waverley-instruments.com/robjackson

## Key features

- Compressor and Limiter modes
- Two intuitive controls (In/Out)
- Simple presets
- AUv3 compatible
- Standalone operation


## Frequently asked questions about LevLr

### What is LevLr?

LevLr is an audio effect plugin that functions as a compressor and limiter. It can be used standalone or within compatible host applications like Logic or GarageBand for music production.

### How does LevLr work?

LevLr offers two modes: Comp (compressor) and Limit (limiter). It uses two main controls, 'In' to drive the effect and 'Out' to adjust the output level, allowing for simple yet effective dynamics processing.

### Can I use LevLr on my master output?

Yes, LevLr includes a 'Master Limiter' preset specifically designed for use on a master bus. This mode can help make your overall mix sound louder and more cohesive.

### What are the compression ratios in LevLr?

LevLr uses a 4:1 ratio in Comp mode and a 12:1 ratio in Limit mode. The attack time is extremely fast, close to 0ms, ensuring it can handle various audio signals effectively.

### Does LevLr have ads?

No, LevLr is completely free and does not contain any advertisements. The developer supports free releases by offering other paid AudioUnit plugins.

### What devices is LevLr compatible with?

LevLr is available for Mac, iPhone, iPad, and iPod. It utilizes the AUv3 plugin format, making it compatible with a wide range of modern audio software.

### How often is LevLr updated?

LevLr was last updated on March 21, 2025, with version 1.0.2. This indicates active development and support for the application.

### What is the user sentiment for LevLr?

Based on the available data, LevLr has a perfect rating of 5.0 stars from 3 ratings, suggesting very positive user sentiment among its current users.

## Version history (last 3 releases)

### 1.0.2 — 2025-03-21

Fixed a broken brick in the brickwall limiter that would sometimes let really loud audio slip through.

As of this version... YOU SHALL NOT PASS!

### 1.0.1 — 2025-03-20

Little bug fix:

Discrepency between default In parameter value and Default preset.

### 1.0.0 — 2025-03-20

No release notes.

## Apps similar to LevLr

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [FAC Clipper](https://appshunter.io/ios/app/fac-clipper/id6742354555) | 5.0 (9) | $9.99 | Music |
| [Visual Multi-Band Compressor](https://appshunter.io/ios/app/visual-multi-band-compressor/id1474969434) | 5.0 (2) | $8.99 | Music |
| [Mix Bus Compressor](https://appshunter.io/ios/app/mix-bus-compressor/id1467711076) | 3.9 (8) | $5.99 | Music |
| [FAC Medusa](https://appshunter.io/ios/app/fac-medusa/id1633097373) | 5.0 (23) | $9.99 | Music |
| [Drum Surgeon AUv3 Plugin](https://appshunter.io/ios/app/drum-surgeon-auv3-plugin/id1539908432) | 4.6 (10) | $9.99 | Music |
| [Sidechain Compressor Plugin](https://appshunter.io/ios/app/sidechain-compressor-plugin/id1500710796) | 3.8 (6) | $5.99 | Music |

## More apps by Rob Jackson

- [moodscaper](https://appshunter.io/ios/app/moodscaper/id1088768073)
- [pianoscaper](https://appshunter.io/ios/app/pianoscaper/id1177444402)
- [moodscaper SE](https://appshunter.io/ios/app/moodscaper-se/id1247452905)
- [touchscaper](https://appshunter.io/ios/app/touchscaper/id1250344299)
- [guitarscaper](https://appshunter.io/ios/app/guitarscaper/id1316544251)
- [moodscaper LE](https://appshunter.io/ios/app/moodscaper-le/id1435065372)

All apps by Rob Jackson: https://appshunter.io/developer/1072346998

## Related topics

[limiter](https://appshunter.io/ios/topics/limiter)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*