Comparison

Undulator vs MIDILODY

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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

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.

About

MIDILODY

This app generates evolving MIDI sequences and loops, perfect for creating ambient textures, live performances, or sparking new musical ideas. It offers real-time editing, key and scale selection, and adjustable sequence and loop durations.

Highlights
  • Evolving MIDI sequences
  • Real-time note editing
  • Key and scale selection
  • Adjustable sequence length
  • Adjustable loop duration
  • Velocity and note filtering
  • MIDI notes routing
Features
Read full description

MIDILODY: Your generative MIDI Sequencer & Looper MIDILODY is a generative MIDI sequencer and looper designed to inspire musicians with evolving, musically rich loops. It excels at creating original sequences that evolve over time, perfect for ambient textures, live performances, or sparking new musical ideas. Key Features: - Evolving Sequences: New notes and rests are added at precise timings, allowing them to overlay existing ones. This overdubbing creates dynamic rhythms and chords, making your loops evolve organically. - Real-Time Editing: Remove unwanted notes and rests on-the-fly without interrupting playback, giving you control during live sessions. - Key and Scale Selection: Choose from predefined scales to set the tonal foundation of your loops. - Auto-Pause Functionality: Automatically pause after adding a new note—ideal for live ambient performances where gradual evolution is key. - Infinite loops: let your MIDI sequence evolve for hours and days constantly. Perfect for ambient / sleep patches. - Rests probability: more flexibility for your loop. - Adjustable Sequence Length: Set your sequence length up to 64 notes - Adjustable Loop Duration: Set your loop duration to 1 bar / 4steps , 2 bars/ 8 steps, or 4 bars/ 16 steps to suit your musical needs. - Velocity and Notes Filtering: Apply filters to capture notes with low velocity, perfect for creating subtle ambient textures. - Note-Off Messaging: Send note-off messages to accommodate external gear or plugins. By default, notes adhere to your AUv3 instruments’ settings. - MIDI Notes routing: filter your notes by octave to send them to other instruments - AUv3 state saving Designed by Musicians, for Musicians We’ve invested significant effort into MIDILODY’s layout and user experience. As daily users ourselves, we’ve ensured it’s straightforward and intuitive, allowing you to focus on creativity. Seamless Integration MIDILODY thrives when paired with MIDI routing options from your AUv3 host, enabling the creation of intricate, evolving textures across multiple AUv3 instruments. Experience the Difference MIDILODY isn’t just easy to use — it’s uniquely inspiring. With every session, it sparks new ideas and unexpected musical directions. Whether you’re producing ambient soundscapes or live looping, it just might become your favorite creative companion. IMPORTANT! MIDILODY is and AUv3 plugin. It won't work in standalone mode. It needs an AUv3 host such as AUM, Drambo, Cubasis, etc.

Screenshots

Undulator3 screens
MIDILODY2 screens

Verdict

The call

The clearest difference is review sentiment: Undulator at 86% against MIDILODY's 0%. Undulator also leads on rating (4.3 vs 4.1) and iOS requirement (11.0 vs 17.6). MIDILODY's advantage is update cadence (weekly vs every 2 months) and price ($4.99 vs $7.99). 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

CostPrice · In-app purchases · Ads · Monetization

Undulator costs $7.99 and MIDILODY $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Undulator holds the better App Store score, 4.3 against 4.1. Both are backed by a comparable volume of ratings — 11 and 9 respectively. Written reviews point the same way: 86% of Undulator's written reviews are positive against 0% of MIDILODY's.

UpkeepUpdate frequency

Undulator ships an update every 2 months, MIDILODY weekly. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

Scorecard5 real differences · 5 level
Undulator versus MIDILODY: the parameters behind the verdict, then further details
ParameterUndulatorMIDILODY
Price$7.99$4.99 — better
Rating4.3 (11 ratings) — better4.1 (9 ratings)
Positive reviews85.7% of reviews — better0.0% of reviews
Number of ratings11 — better9
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better17.6
Further details — not scored
Size16 MB23 MB
Age rating4+4+
DeveloperEventideFrancois Nicaise

Customer experience

Undulator

All ratings11 ratings
Positive81.8%
Neutral0.0%
Negative18.2%
Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

MIDILODY

All ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews2 reviews
Positive0.0%
Neutral50.0%
Negative50.0%

In-app purchases

None

Undulator

No in-app purchases

None

MIDILODY

No in-app purchases

Questions

Is Undulator free?
Undulator costs $7.99, with no in-app purchases.
Is MIDILODY free?
MIDILODY costs $4.99, with no in-app purchases.
Which has better reviews, Undulator or MIDILODY?
Undulator is rated higher. Undulator averages 4.3 out of 5 from 11 ratings, while MIDILODY averages 4.1 from 9 ratings.
Do Undulator or MIDILODY have ads?
Neither Undulator nor MIDILODY shows ads.
Which is updated more often, Undulator or MIDILODY?
Undulator ships an update every 2 months, and MIDILODY weekly. Most recently, Undulator was updated on October 14, 2026 and MIDILODY on October 16, 2026.

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