# Undulator — Modulated Tremolo Effect

> Classic modulated tremolo effect for creative sound manipulation. (iPhone/iPad app by Eventide.)

- Source: https://appshunter.io/ios/app/undulator/id1463822021 (this page in markdown: same URL + `.md`)
- Developer: [Eventide](https://appshunter.io/developer/546518026)
- Category: Music, Entertainment
- Price: $3.99 (on sale, was $7.99)
- Rating: 4.30/5 from 11 App Store ratings · 7 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 16 MB
- Released: 2020-07-13
- Data updated: 2026-08-07
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/undulator/id1463822021/reviews.md

## What is Undulator?

Undulator is Eventide’s classic modulated tremolo effect from the iconic H3000 effects processor. This unique, rhythmic effect combines ethereal feedback and detuned echos, run through an AM / FM modulated tremolo. Whether used for manipulating samples or adding movement to strings, pads, guitars, and keys, Undulator is a muse for creative musicians. Add Undulator into your plug-ins collection for the most playable tremolo-style effect on your DAW or iOS device.

Undulator excels at evolving pads, sync’d chops, and time-lapsing dreamy soundscapes. Combined with a multi-tap delay and powerful tremolo, Undulator’s controls give any sound sustain and shape. This is perfect for transforming ordinary synths, keys, guitars, and even vocals into evolving pads, tempo synced production elements, or ethereal and fluctuant delays. Simply put, Undulator can make shorter sounds into longer layered effects, and give sustaining sounds shape and rhythmic character.

Use the Ribbon to morph tremolo patterns into vacillating and varying rhythmic territories. This can be effective for calling attention to synth pads and creating a state of flux or rarity which is otherwise arduous to achieve.

- Turn up the MIX to increase the dry/effect ratio.
- Utilize multiple modulation waveform shapes and sources to alter the rhythmic feel.
- Subtly finesse detuning of delays by using SPREAD.
- Add FEEDBACK to accentuate delays or create infinite loops.
- The Secondary LFO determines how fast the depth and speed modulation “wiggle” their targets.
- Lock the tremolo to tempo using SYNC.
- RETRIG at the top of the waveform for a more predictable effect.
- RIBBON lets you ‘play’ the effect in real-time and provides dynamic and fluid control to morph back and forth between the settings of your choice.
- SLOW/FAST button toggles on a “Slow LFO” mode. Holding it down to “BRAKE” temporarily slows down the LFOs at a constant rate until released.
- Update the tremolo speed in real time using the TAP button.
- Available as an AUv3 plug-in and Standalone App.

## Key features

- Modulated tremolo effect
- Ethereal feedback and detuned echoes
- AM/FM modulation
- Tempo sync
- Real-time ribbon control
- Multiple modulation waveforms

## Recent user reviews (7 of 7)

All indexed reviews: https://appshunter.io/ios/app/undulator/id1463822021/reviews.md

### 2/5 — Undulator with AUM mixer problem

*2024-03-04*

Can’t find Undulator under AUM mixer on my iPhone 11 :(

**Developer response:** Hi, sorry to hear about the issue. If you email support@eventide.com with a description/screenshots of the issue you are experiencing, we can assist you further.

### 4/5 — Sweet

*2021-05-06*

Of limited use but grooves as a “none of the above” fx. Learn what the ribbon does on these Eventide apps or you’re just ripping yourself off.

### 5/5 — Yes !

*2021-02-07*

Vraiment très bien.
Merci.

### 5/5 — Fantastic

*2020-07-24*

Dark. Weird. Awesome.

### 5/5 — One of Eventide’s bests.

*2020-07-21*

This app is one of my faves by Eventide and I own them all. This and blackhole all day long!

### 5/5 — Dimapicstudio :The best

*2020-07-14*

For any type of creativeness this app slams it.Go get it already. Run it through anything and instant gratification. I love it

### 5/5 — Dope

*2020-07-14*

Funnnn

## Frequently asked questions about Undulator

### What is Undulator?

Undulator is a mobile application that provides a classic modulated tremolo effect, inspired by the Eventide H3000. It's designed to add rhythmic movement, feedback, and echoes to your music.

### What kind of sounds can Undulator create?

Undulator excels at creating evolving pads, tempo-synced chops, and dreamy soundscapes. It can transform synths, keys, guitars, and vocals into dynamic and rhythmic elements.

### Can I control Undulator in real-time?

Yes, Undulator features a Ribbon controller that allows you to 'play' the effect in real-time, providing dynamic and fluid control to morph between different settings.

### Does Undulator sync to my project's tempo?

Yes, Undulator includes a SYNC feature that allows you to lock the tremolo effect to your DAW or project's tempo for precise rhythmic integration.

### What devices is Undulator available on?

Undulator is available as an AUv3 plug-in and Standalone App for iPhone, iPad, and iPod, supporting iOS devices.

### How much does Undulator cost?

Undulator is a paid application, priced at $7.99. There are no in-app purchases or subscriptions required.

### How often is Undulator updated?

Undulator was last updated on March 6, 2024, with version 1.0.20. This indicates active development and support for the application.

### What is the age rating for Undulator?

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

## Version history (last 5 releases)

### 1.0.20 — 2024-03-06

- Fixes a bug where Touch and Latch automation were not correctly written in Logic Pro for iPad.
- Fixes a bug where the Standalone background image would not render correctly on some iOS devices.
- Adds a MIDI Mute description to the help screen.
- Removes Inter-App Audio support, as it has been deprecated by Apple. Audio Unit v3 can be used instead.
- Other internal bug fixes and improvements.

### 1.0.8 — 2022-03-23

Added MIDI muting.

### 1.0.7 — 2022-03-07

Added support for iPad mini 6 screen resolution.

### 1.0.6 — 2020-11-23

Added new artist presets.

### 1.0.5 — 2020-10-20

Fix for issue that affected ribbon mappings.

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## More apps by Eventide

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All apps by Eventide: https://appshunter.io/developer/546518026

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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 2026-08-07.*