# Scaler EQ — World's First Truly Musical EQ

> Musical EQ that adjusts frequencies based on audio key and scale. (iPhone/iPad app by Scaler Music.)

- Source: https://appshunter.io/ios/app/scaler-eq/id6499342445 (this page in markdown: same URL + `.md`)
- Developer: [Scaler Music](https://appshunter.io/developer/1603180477)
- Category: Music, Productivity
- Price: $12.99
- Rating: 4.60/5 from 27 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 27 MB
- Released: 2024-05-06
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/scaler-eq/id6499342445/reviews.md

## What is Scaler EQ?

Following on from the award-winning Scaler music theory plugin, Scaler EQ offers a remarkable new way to EQ with musicality and colour.
By detecting the key and scale of your audio and enhancing only note frequencies in key with your song, and reducing only note frequencies that aren’t, Scaler EQ can provide a new spin on working with cuts and boosts, increasing the tonality behind your music and providing new harmonic avenues. And for when you just want a regular, fully-featured, modern EQ, Scaler EQ has you covered with its familiar workflow, large choice of band types, mid/side operation, dynamic bands, peak limiters, and stereo enhancement. You can easily apply classic mixing and mastering techniques used by professionals, with an extra optional musical edge.

NOTE: We have designed Scaler EQ for iPad. It works on iPhone too with identical functionality but relies more on the two finger tap to zoom function.

-The World’s First In-Key EQ
-Simple Key Detection
-Musician- and Producer-Friendly Band Types
-The Magic Shelf
-Mastering Grade Limiters and Meters
-All the Mod EQ Cons

Main Features:

Patent pending musical EQ with harmonic band types that boost in-key frequencies and cut out-of-key frequencies
Familiar EQ controls translate to a regular workflow – but one that adds more colour
Choice of band types for traditional boost/cut EQ or harmonic EQ
Magic Shelf bands deliver punchier low end and smoother highs
Simple key detection identifies the key and scale of your audio and sets the EQ’s target scale
Scale Switching allows for scale and key changes in your track
Dial in dynamics for any band (Threshold, Ratio, Attack, Release)
Control any shape dynamically via sidechain input
Add or remove scale notes for a specific colour (eg, four-note chords or just fifths)
Input And Output Peak Limiters
Adjustable input and output levels with peak and RMS metering
Create unique EQ responses by combining magic shelves, harmonic filters and cuts
Each band can be set to work on stereo, mid or side channels
Enhance stereo width and collapse low frequencies to mono
Minimum phase, zero latency EQ
Standalone and compatible with AUv3 host apps such as Logic Pro, GarageBand, Auria, AUM, and Cubasis.
Closable Panels and iOS zoom functions

What can Scaler EQ be used for?

Music Production: Ideal for musicians and producers looking to enhance the musicality of their tracks by ensuring all instruments are in harmony with the chosen scale.
Audio Editing: Simplify EQ processes by targeting and cleaning up frequency bands to remove audio that doesn’t belong and enhance audio naturally present with the chosen scale.
Audio Engineering: Dynamically soothe audio by suppressing in-harmonic frequencies or expanding harmonic frequencies using dynamic compression and expansion.
Mastering: Place on your master channel to broaden your stereo width, focus your bass, increase loudness, and enhance your mix.
Sound Designers: Easily create playable instruments from any recorded sound source using the Sound Design presets and musical resonator FX.
DJing: DJs can use it to ensure that the tracks they mix are in harmony by detecting the key and scale whilst balancing the mix of each track.

-"Scaler EQ is plugin that offers an innovative way to equalise with musicality and colour. It is a plugin that deserves to be tried by anyone."
DJ Mag Italia

-"Scaler EQ is a groundbreaking advancement in the world of audio engineering. The harmonic EQ technology is a game-changer."
Song Mix Master

-"Scaler EQ can make subtle harmonic changes or be a hugely creative plugin, but either way it makes your mixes sound
better."
Computer Music July 2024

-"Scaler EQ delivers harmonic processing we didn’t know we needed, but once heard, we might just apply it to everything."
Music Radar

-"Scaler EQ is a valuable tool for musicians, producers and audio professionals. It just might be the only EQ you need going forward’
24bit Electronic Music Production

## Key features

- In-key EQ with harmonic band types
- Automatic key and scale detection
- Familiar EQ controls with added color
- Magic Shelf for enhanced low and high frequencies
- Mastering-grade limiters and meters
- Dynamic band control and sidechain input
- Standalone and AUv3 host compatibility

## Chart rankings

- #183 in Top Paid · Music (US App Store)

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/scaler-eq/id6499342445/reviews.md

### 4/5 — Really useful, as long as A=440Hz

*2024-11-01*

Great EQ. Can really clean up your sound and can make major repeated changes without noticeable artifacts. The harmonic boosts and cutting work really well, but if you record something out of tune (A=447Hz for example), none of the scales will match. Could really do with a micro-tuning feature to adjust and then it would be perfect for all occasions.

### 2/5 — Question?

*2024-07-14*

How to use it on iphone?

**Developer response:** Hi, do you mean how to navigate around the UI? Two finger tap zooms in and two finger scroll around the UI. There's a good demo of it here. https://youtu.be/ahLkYnxYv0g?si=blhP6WCXILLkASxu. Also don't forget our wonderful and helpful community over at forum.scalerplugin.com Hope that helps.

### 2/5 — No UI / unresponsive in Logic Pro 2 for iPad

*2024-05-22*

I’m trying to round-trip a project from Logic Pro 11 on Mac to the iPad. I have Scaler EQ on both platforms. But when I load the project on the iPad Scaler EQ doesn’t work. 

Is it not cross-platform compatible if I own it on both?

**Developer response:** Hi @BCnSTL UPDATE: This has been fixed with Scaler EQ 1.1.2 Please update your app and desktop version both to Scaler EQ 1.1.2 for cross platform compatibility. Thanks for reporting.

## Frequently asked questions about Scaler EQ

### What is Scaler EQ?

Scaler EQ is a music production tool designed for iPad and iPhone that offers a unique approach to equalization. It analyzes the key and scale of your audio to intelligently adjust frequencies, enhancing in-key notes and reducing out-of-key ones.

### Does Scaler EQ have ads?

No, Scaler EQ does not contain advertisements. It is a paid application offering a focused and uninterrupted audio editing experience.

### What devices does Scaler EQ support?

Scaler EQ is designed for iPad and also works on iPhone and iPod. It is compatible with AUv3 host applications like Logic Pro, GarageBand, Auria, AUM, and Cubasis.

### How does Scaler EQ's musical EQ differ from a standard EQ?

Unlike standard EQs that adjust frequencies broadly, Scaler EQ identifies the musical key and scale of your audio. It then selectively boosts frequencies that are part of the scale and cuts those that are not, adding musicality and color.

### Can I use Scaler EQ for traditional mixing and mastering?

Yes, Scaler EQ includes familiar EQ controls, band types, mid/side operation, dynamic bands, and peak limiters, allowing for traditional mixing and mastering techniques with an added musical advantage.

### What is the price of Scaler EQ?

Scaler EQ is available for a one-time purchase of $12.99. This grants you full access to all its features without any additional in-app purchases or subscriptions.

### How often is Scaler EQ updated?

Scaler EQ was last updated on July 17, 2024, with version 1.1.2. This indicates a commitment to ongoing development and improvements for the application.

### What is the age rating for Scaler EQ?

Scaler EQ has an age rating of 4+, making it suitable for a wide range of users interested in music production and audio editing.

## Version history (last 2 releases)

### 1.1.2 — 2024-07-17

* Improved iOS Version. Fixed state transfer from iOS to OSX (Requires Scaler EQ Desktop 1.1.2 update).
* Fixed rare crash when opening plugin
* Fixed GUI opening too large on certain screens
* Fixed rare case where state would not save properly in certain DAWs

### 1.1.1 — 2024-05-06

No release notes.

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## More apps by Scaler Music

- [Scaler 2](https://appshunter.io/ios/app/scaler-2/id1603180235)

All apps by Scaler Music: https://appshunter.io/developer/1603180477

## Related topics

[scaler eq](https://appshunter.io/ios/topics/scaler-eq) · [scaler](https://appshunter.io/ios/topics/scaler) · [scaler music](https://appshunter.io/ios/topics/scaler-music) · [scaler 2](https://appshunter.io/ios/topics/scaler-2)

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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 2026-08-24.*