# LFOH! — Audio and MIDI modulator

> Advanced LFO audio and MIDI modulator with morphable waveforms and quantization. (iPhone/iPad app by K-Devices.)

- Source: https://appshunter.io/ios/app/lfoh/id1609270466 (this page in markdown: same URL + `.md`)
- Developer: [K-Devices](https://appshunter.io/developer/1151339600)
- Category: Music
- Price: $3.99
- Rating: 4.70/5 from 18 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.3 · 17 MB
- Released: 2023-03-14
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/lfoh/id1609270466/reviews.md

## What is LFOH!?

LFOH! is an augmented, stunning (as the name suggests!), LFO which enhances the possibilities of the classic cycling envelope by adding control over a set of advanced and unique features.

LFOH! is a single oscillator LFO and has a set of continuously morphable and selectable waveforms that represents the core of its modulation signal. Apart from the classic frequency and phase parameters (which make it capable of all of the classic modulation stuff), the waveform can also be shaped by swinging its cycles, bending its curve, squeezing portions of oscillation in the same period of time, scaled and transformed while exceeding its boundaries. An additional Sample and Hold circuit provides quantization for the resulting signal.

A tool you already know, with the most advanced features: simple and powerful.

LFOH! is both an audio processor and a MIDI modulator: while is capable to send its modulation signal out as MIDI CC (according to the MIDI routing flexibility of the app that hosts it), it can also modulate the amplitude of incoming audio. 

*** Please note: LFOH! is an Audio Unit extension (AUv3) – it only works in an AUv3 host app like AUM, Drambo, Cubasis, etc... ***

## Key features

- Morphable and selectable waveforms
- Advanced waveform shaping
- Sample and Hold circuit
- Audio amplitude modulation
- MIDI CC output
- AUv3 extension

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/lfoh/id1609270466/reviews.md

### 5/5 — Love it… but

*2026-02-10*

I am having trouble running more then one instance of this in AUM .. Maybe that’s an AUM thing or a user error… Thanks for making this

### 1/5 — No midi fx

*2025-03-14*

I can't use it in GR2 because it's no midi fx and I also dont need it on fx slots or route...useless to me, sad.

### 3/5 — Beware, this is NOT primarily a midi INPUT plugin

*2024-01-14*

This is an instrument/effect plugin and will not work as a midi fx input so possibilities are limited in Logic Pro for example.

Whilst the plugin does a great job of outputting midi, the destinations within logic are limited.

Hidden feature of this plugin, it’s basically a sidechain volume “pumper” when used in an audio insert slot with the audio input slider turned up.

@Dev, please add a midi effect version/support so we can “learn” the output to control instruments and fx in logic pro for ipad.

### 5/5 — I love it (but)

*2023-07-21*

App features a useful collection of parameters. I only wish the UI was focused more on usability than the looks. Everything is small and hard to handle. This seems to be an issue with all the apps from this dev.

### 5/5 — Double Duty Delight

*2022-10-04*

K-Devices has been making some great apps, and this one is amazing. It is both an audio Au fx and midi Au fx all in one. I love that you can use it multiple ways. It sounds great as an audio effect and provides a great option to modulate parameters in your host/DAW as a midi fx. I definitely recommend this app. Thanks & Cheers K-Devices!

### 5/5 — Perfect port of a great mod plugin

*2022-06-10*

LFOH! is my “go to” plug-in for modulation in Ableton Live. Very happy to have it on iOS. Great job K-Devices! Works flawlessly. Get a tip jar on here, it’s worth far more than $1.99!

### 5/5 — Die neue Referenz für LFOs!

*2022-06-09*

Schaut mal genau hin, liebe Synth Entwickler. So sollte ein LFO ausgestattet sein!
@developer (if you read this):
Mille grazie for bringing this great tool to the iPad! BUT — Please
Make the MIDI out selection box (Channel and CC#) lockable,
so that if you load a preset, the Channel and CC doesn’t change. 
This is a bit annoying. 
Skål!

## Frequently asked questions about LFOH!

### What is LFOH! used for?

LFOH! is an advanced LFO (Low-Frequency Oscillator) tool that enhances audio and MIDI modulation. It allows for complex shaping of modulation signals, making it useful for sound design and creative music production.

### Does LFOH! work as a standalone app?

No, LFOH! is an Audio Unit extension (AUv3) and requires a compatible host app such as AUM, Drambo, or Cubasis to function. It cannot be run as a standalone application.

### What kind of waveforms does LFOH! offer?

LFOH! features continuously morphable and selectable waveforms. These can be shaped by swinging cycles, bending curves, squeezing oscillations, scaling, and transforming beyond their boundaries.

### Can LFOH! control MIDI devices?

Yes, LFOH! can send its modulation signal out as MIDI CC messages. This allows it to control other MIDI-compatible instruments and effects within your host application.

### What is the price of LFOH!?

LFOH! is a paid application priced at $3.99. This is a one-time purchase, and there are no in-app purchases or subscriptions required.

### What devices is LFOH! compatible with?

LFOH! is compatible with iPhone, iPad, and iPod. It is designed to work on iOS devices and requires an AUv3 host application.

### How often is LFOH! updated?

LFOH! was last updated on June 6, 2022, with version 1.0. Further updates will depend on the developer's release schedule.

### Is LFOH! suitable for beginners?

While LFOH! offers advanced features, its core functionality is based on the familiar concept of an LFO. Its simple yet powerful interface makes it accessible, but mastering its advanced shaping capabilities may require some experience with audio modulation.

## Version history (last 1 release)

### 1.0 — 2022-06-06

No release notes.

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All apps by K-Devices: https://appshunter.io/developer/1151339600

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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.*