Comparison

Harmonix vs ShiftBud Generative MIDI AUv3

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

Head to head
About

Harmonix

This app provides an intelligent controller for the Elektron Digitone FM Synth, offering features like sound type programming, parameter randomization, and pattern generation. It allows for manual or queued pattern launching and includes customizable keyboard filters for note selection and parameter control.

Highlights
  • Intelligent Sound Types
  • Parameter Randomize/Morph/Reset
  • Sound Design Functions & Macros
  • Mixer Control
  • Intelligent Pattern Generation
  • Customizable Keyboard Filters
Read full description

Harmonix is an intelligent controller for Elektron's Digitone FM Synth! - Intelligent Sound Types (Pad, Strings, Drone, Hybrid, Keys, Classic, Dub, Mono, Organ, Bass, Square, Noise, Kick, Perc, Chaos, Custom) lets you program Sounds with minimal effort - Randomize / Morph / Reset parameters (Tracks, Pages, MFX, Mixer, Mods) - Sound design functions and macros - Mixer to control Track Levels, Mute, Pan, Drive & FX Sends - Randomize Modulations - Intelligent Pattern Generation - Snapshots for install recall of Sounds - Manually launch Patterns or Queue up to 16 Patterns (Song Mode) - Save / Load Presets - Customizable Keyboard filters notes to the selected Key / Scale, and controls various parameters with vertical finger movement *OS 1.30 or higher is required

About

ShiftBud Generative MIDI AUv3

This app generates random MIDI sequences using a shift register chip, inspired by a popular eurorack module. It offers extensive control over scales, octaves, velocity, and MIDI CC modulation, allowing for complex and evolving musical patterns.

Highlights
  • Random looping generative MIDI sequencing
  • 16-bit shift register logic
  • Adjustable chaos for sequence variation
  • Over 110 scales plus custom scales
  • MIDI CC generation and modulation
  • Unlimited pattern pages
  • Manual trigger function
Features
Read full description

ShiftBud is a random looping generative MIDI sequencer based on the eurorack module Turing Machine by Tom Whitwell.  It works based on the 16-bit shift register chips where it shifts its value on each sequencer step. However, you can lock the sequence in a desired length if you fully rotate the chaos knob to the left or right. If you introduce low amount of chaos, then the sequence "flips" occasionally and generate beautiful sequences. You can also produce random values if set higher amount of chaos.  The MIDI note generation can be in more than 110 scales plus your custom ScaleBud 2 scales. You can set the octave range, velocity or velocity randomness as well. You can set the higher and lower bounds on MIDI Control Change generation as well as the CC number you want to control. It's very useful on modulating synth parameters and you can even modulate the ShiftBud's AU parameters as well. You can also set a ramping value for a smoother change. With the 0% ramping, you can use it like a "sample and hold" module. With the manual trigger function, you can use another sequencer or keyboard to trigger ShiftBud's next note. You can create unlimited pattern pages on the lower left corner of the app and you can select the pattern with MIDI CC messages as well. Please note that ShiftBud is a MIDI app. The standalone version has an optional internal synth where you can enable or disable on the settings menu. The AUv3 plugin requires an audio app for output. For the AUv3 functionality, it needs to be hosted within an app such as AUM, Loopy Pro, Cubasis, Logic Pro, Nanostudio, Drambo, or apeMatrix.

Screenshots

ShiftBud Generative MIDI AUv34 screens

Verdict

The call

The clearest difference is price: ShiftBud Generative MIDI AUv3 at $5.99 against Harmonix's $14.99. ShiftBud Generative MIDI AUv3 also leads on device support (3 vs 1). Harmonix's advantage is review sentiment (100% vs 67%) and rating (5.0 vs 4.7). 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

Harmonix costs $14.99 and ShiftBud Generative MIDI AUv3 $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Harmonix holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 5 and 9 respectively. Written reviews point the same way: 100% of Harmonix's written reviews are positive against 67% of ShiftBud Generative MIDI AUv3's.

UpkeepUpdate frequency

Harmonix ships an update every 2 weeks, ShiftBud Generative MIDI AUv3 monthly. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

Scorecard5 real differences · 5 level
Harmonix versus ShiftBud Generative MIDI AUv3: the parameters behind the verdict, then further details
ParameterHarmonixShiftBud Generative MIDI AUv3
Price$14.99$5.99 — better
Rating5.0 (5 ratings) — better4.7 (9 ratings)
Positive reviews100.0% of reviews — better66.7% of reviews
Number of ratings59 — better
Update frequencyEvery 2 weeks — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.0 — better13.0
Further details — not scored
Size13 MB7 MB
Age rating4+4+
DeveloperMarcos KohlerCem Olcay

Customer experience

Harmonix

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

ShiftBud Generative MIDI AUv3

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

In-app purchases

None

Harmonix

No in-app purchases

None

ShiftBud Generative MIDI AUv3

No in-app purchases

Questions

Is Harmonix free?
Harmonix costs $14.99, with no in-app purchases.
Is ShiftBud Generative MIDI AUv3 free?
ShiftBud Generative MIDI AUv3 costs $5.99, with no in-app purchases.
Which has better reviews, Harmonix or ShiftBud Generative MIDI AUv3?
Harmonix is rated higher. Harmonix averages 5.0 out of 5 from 5 ratings, while ShiftBud Generative MIDI AUv3 averages 4.7 from 9 ratings.
Do Harmonix or ShiftBud Generative MIDI AUv3 have ads?
Neither Harmonix nor ShiftBud Generative MIDI AUv3 shows ads.
Which is updated more often, Harmonix or ShiftBud Generative MIDI AUv3?
Harmonix ships an update every 2 weeks, and ShiftBud Generative MIDI AUv3 monthly. Most recently, Harmonix was updated on October 3, 2026 and ShiftBud Generative MIDI AUv3 on October 15, 2026.

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