Undulator vs LFOH!
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Undulator
This app offers a classic modulated tremolo effect inspired by a renowned hardware processor. It allows musicians to add rhythmic movement, ethereal feedback, and detuned echoes to various instruments and samples, creating evolving soundscapes and dynamic textures.
- Modulated tremolo effect
- Ethereal feedback and detuned echoes
- AM/FM modulation
- Tempo sync
- Real-time ribbon control
- Multiple modulation waveforms
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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.
LFOH!
This app is an advanced LFO tool that enhances classic cycling envelopes with unique shaping and morphing features. It functions as both an audio processor and a MIDI modulator, offering extensive control over modulation signals.
- Morphable and selectable waveforms
- Advanced waveform shaping
- Sample and Hold circuit
- Audio amplitude modulation
- MIDI CC output
- AUv3 extension
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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... ***
Screenshots
Verdict
The clearest difference is rating: LFOH! at 4.7 against Undulator's 4.3. LFOH! also leads on price ($3.99 vs $7.99) and chart position (#200 vs unranked). Undulator's advantage is review sentiment (86% vs 63%). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Undulator costs $7.99 and LFOH! $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
LFOH! holds the better App Store score, 4.7 against 4.3. Both are backed by a comparable volume of ratings — 11 and 18 respectively. Written reviews complicate that: 86% of Undulator's written reviews are positive against 63% of LFOH!'s, so the app with the better star average is not the one people write more warmly about.
| Parameter | Undulator | LFOH! |
|---|---|---|
| Price | $7.99 | $3.99 — better |
| Rating | 4.3 (11 ratings) | 4.7 (18 ratings) — better |
| Positive reviews | 85.7% of reviews — better | 62.5% of reviews |
| Number of ratings | 11 | 18 — better |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #200 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 | 9.3 — better |
| Further details — not scored | ||
| Size | 16 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Eventide | K-Devices |
Customer experience
Undulator
LFOH!
In-app purchases
Undulator
No in-app purchases
LFOH!
No in-app purchases









