Comparison

RhythmBud vs EvolverFX AUv3 Audio Plugin

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

Head to head
About

RhythmBud

This app transforms incoming MIDI messages into custom rhythmic patterns using an intuitive editor. It supports various audio routing methods and offers features like snapshots, record mode, and undo/redo.

Highlights
  • MIDI effect processing
  • Timeline editor for rhythm patterns
  • Strumming, arpeggios, transposition effects
  • Snapshots for saving configurations
  • Record mode for tapping rhythms
  • Undo/redo functionality
  • Quantization options
Features
Read full description

RhythmBud is a MIDI effect application that would transform incoming MIDI messages into the rhythmic pattern you will create on its editor. Supports AUv3 Audio Unit plugin, Audiobus, Inter-App Audio (IAA), Ableton Link and Core MIDI (Standalone). It sits between a MIDI sender (external hardware or any MIDI controller/sequencer app) and a MIDI receiver (any audio app or external hardware). As long as you connect its MIDI input and output you are good to go. It has a pretty easy-to-use timeline editor, where you can create rhythm patterns. You may add different effects for your every pattern by tapping them on the timeline, such as strumming effects, arpeggios, transposition, velocity manipulation, ratchets and so on. When you are ready, press the play button and start the RhythmBud engine. As long as it receives MIDI notes, it will generate your rhythm pattern and send it to your assigned MIDI output port. Even if you change the playing note/chord, it will adapt instantly! It has a neat feature called “Snapshots” where you can save the current RhythmBud configuration instantly and come back later. You may also control your snapshots via MIDI CC messages or Audio Unit Parameters. You can create a whole song with that feature in your project. It also supports “User Presets” in AUv3 mode. Another great feature is the “Record Mode” where you can record a pattern by tapping the toolbar—like clapping your hands or snapping your fingers for creating a rhythm pattern! Press the “Done” button when you are done. If you are not happy, you can always undo/redo your actions as well. You can also quantize your pattern on different timing levels. If you want to clear everything and start over again, just press the clear button. RhythmBud is using the open-source AudioKit framework under the hood. Also, it offers some other open-source frameworks as well. Check them out on GitHub!

 AudioKit: https://github.com/AudioKit/AudioKit MusicTheorySwift: https://github.com/cemolcay/MusicTheory MIDIEventKit: https://github.com/cemolcay/MIDIEventKit RBEditorViewController: https://github.com/cemolcay/RBEditorViewController *** Disclaimer: This is not an audio app! It does not generate audio. This is a MIDI effect app that needs both MIDI input and MIDI output routing. It does not transform the MIDI until you creating a pattern and pressing the play button.

About

EvolverFX AUv3 Audio Plugin

Create multi-layered evolving soundscapes and automatic musical accompaniment. This tool features a sophisticated synthesizer and sequencing engine with four independent lanes, allowing for complex sound design and real-time performance control. It supports MIDI input, audio samples, and harmonic sound generation.

Highlights
  • 4 independent sequencer lanes
  • Up to 64 steps per sequence
  • MIDI keyboard input
  • Audio sample layering
  • Harmonic sound generation
  • Real-time performance controls
  • ARP function
Features
Read full description

Evolver is a performance tool for creating multi-layered evolving sequences of sound. At its most basic think of evolver as a 4 lane sequencer which creates automatic accompaniment from notes and chords as you play on your MIDI keyboard, but it can also be used to create elastic evolving soundscapes where audio samples seamlessly merge into one another to create highly complex and original sounds. At the heart of evolver is a sophisticated wave synthesizer and sequencing engine which can create dramatic hard hitting transitions of sounds or merge sounds to create seamless transitions that evolve in time to the beat. It has 4 sequencer lanes which can run independently and mixed together using the real-time controls or over MIDI. When you play a chord on your MIDI keyboard for instance, each of the 4 sequencer lanes will take those MIDI notes and translate them into a musical sequence of sounds which are combined together and synced to create a form of automatic accompaniment. Evolver can load its own multi-layer patches or import them directly from Chameleon. These patches can be layered using the 4 sequencer lanes or split over a virtual keyboard. You can assign key zones, transpose them, assigned MIDI channels and velocity levels, set latch options etc. You can also load in your own one shot samples and lay them end on end to create evolving atmospheres or backing soundscapes. These samples can be looped or be free running with definable start/end and loop points using our non destructive editor. We also included a third sound source which lets you build sounds on the fly by overlaying harmonics to create anything from traditional sine, square, triangle, saw waves to complex detuned oscilators. These can be used in conjunction with multi-samples or one-shot-samples within the same sequencer lane. You can even randomize a complete sequence of harmonic sounds which when pieced together create some very unique and dynamic voices. Each sequencer lane can be up to 64 steps in length, each step has independent timing, pitch, volume, gate, probability, sample source etc. so the scope of what is achievable is vast. Each sequencer lane has its own ADSR, VCF and LFO which operates on all sounds within its lane, as well as being able to change the underlying settings for each sound source. Evolver also includes an ARP function which can be run in one of the default modes or you can define your own fingering patterns to be used to enhance your playing style. Create your own sequences, lay down your MIDI notes in your DAW and have Evolver automatically play along to your chord sequences, automatically locking to the host tempo. Sequencer events can be fixed or transposed allowing you to create percussive and drum backing using a single lane. Key Features: • 4 sequencer lanes • Up to 64 notes per sequence. • Each note can be fixed or transposed. • Timing and note probability. • 3 different sound source types (multi-sample, one-shot samples and harmonic) . • Add your own loops to a sequence. • Built in ARP function. • Import your own samples and mutli-sample patches. • Chameleon Support. • 5 different effect types (reverb, delay, phaser, flanger and chorus). • 8 band EQ. • .Latch Feature to hold chords/notes. • Create independent key zones with transposition and MIDI channels. • Paramter Automation from your DAW. • Control mixing and sequencer enable buttons using MIDI. • Built in Sampler. • Multiple Import options (including an experimental SFZ format). • iTunes and Files App importing of samples into the audio pool. • Files App Drag & Drop Support • Comprehensive Help pages included. Please Note: Not all features are currently compatible with Auria.

Screenshots

RhythmBud4 screens
EvolverFX AUv3 Audio Plugin4 screens

Verdict

The call

The clearest difference is price: RhythmBud at $4.99 against EvolverFX AUv3 Audio Plugin's $14.99. EvolverFX AUv3 Audio Plugin's advantage is review sentiment (72% vs 55%). On rating, ratings volume, update cadence and ads 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

RhythmBud costs $4.99 and EvolverFX AUv3 Audio Plugin $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for RhythmBud against 4.7 for EvolverFX AUv3 Audio Plugin. Both are backed by a comparable volume of ratings — 20 and 35 respectively. Written reviews are what separate them: 55% of RhythmBud's written reviews are positive against 72% of EvolverFX AUv3 Audio Plugin's.

UpkeepUpdate frequency

RhythmBud ships an update monthly, EvolverFX AUv3 Audio Plugin every 3 weeks. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
RhythmBud versus EvolverFX AUv3 Audio Plugin: the parameters behind the verdict, then further details
ParameterRhythmBudEvolverFX AUv3 Audio Plugin
Price$4.99 — better$14.99
Rating4.5 (20 ratings)4.7 (35 ratings) — better
Positive reviews55.0% of reviews72.2% of reviews — better
Number of ratings2035 — better
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13
Further details — not scored
Size23 MB861 MB
Age rating4+4+
DeveloperCem Olcay4Pockets.com

Customer experience

RhythmBud

All ratings20 ratings
Positive90.0%
Neutral0.0%
Negative10.0%
Written reviews20 reviews
Positive55.0%
Neutral5.0%
Negative40.0%

EvolverFX AUv3 Audio Plugin

All ratings35 ratings
Positive88.6%
Neutral8.6%
Negative2.9%
Written reviews36 reviews
Positive72.2%
Neutral13.9%
Negative13.9%

In-app purchases

None

RhythmBud

No in-app purchases

None

EvolverFX AUv3 Audio Plugin

No in-app purchases

Questions

Is RhythmBud free?
RhythmBud costs $4.99, with no in-app purchases.
Is EvolverFX AUv3 Audio Plugin free?
EvolverFX AUv3 Audio Plugin costs $14.99, with no in-app purchases.
Which has better reviews, RhythmBud or EvolverFX AUv3 Audio Plugin?
EvolverFX AUv3 Audio Plugin is rated higher. RhythmBud averages 4.5 out of 5 from 20 ratings, while EvolverFX AUv3 Audio Plugin averages 4.7 from 35 ratings.
Do RhythmBud or EvolverFX AUv3 Audio Plugin have ads?
Neither RhythmBud nor EvolverFX AUv3 Audio Plugin shows ads.
Which is updated more often, RhythmBud or EvolverFX AUv3 Audio Plugin?
RhythmBud ships an update monthly, and EvolverFX AUv3 Audio Plugin every 3 weeks. Most recently, RhythmBud was updated on October 22, 2026 and EvolverFX AUv3 Audio Plugin on October 24, 2026.

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