Comparison

MIDIx vs Galaxy Brain

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

Head to head
About

MIDIx

This app uses physics simulations to generate expressive MIDI data. Control parameters through object movement or create generative note sequences. It's a unique tool for musicians seeking organic and evolving soundscapes.

Highlights
  • Physics-driven MIDI CC generation
  • Generative MIDI note sequencing
  • AUv3 plugin support
  • Customizable physics scenes
  • Built-in scale library
  • Real-time modulation
  • Universal app for iOS and Mac
Features
Read full description

MIDIx brings a new dimension to MIDI control. Instead of programming sequences or drawing automation, you let physics do the work. Objects bounce, fall, orbit, and collide — and every movement becomes expressive MIDI data in real time. MIDIx is a universal app for iPhone, iPad and Mac, and supports AUv3 so you can use it as a plugin directly in your favorite host. Organic CC Controller The CC page gives you 8 independent physics scenes, each generating two MIDI CC values — X and Y — from the motion of a physical object, for up to 16 simultaneous CC streams. Each axis maps directly to its CC value, creating smooth, organic modulation that no LFO can replicate. Each output can be assigned to any MIDI CC parameter — or to a parameter of another scene, enabling complex modulation chains where one physics engine drives the behavior of another. Hit Freeze to instantly hold the current motion in place, perfect for locking in a value during a performance. Generative MIDI Sequencer The Notes page transforms physics into melody. Add as many objects as you want to the scene — each one bounces freely and triggers a MIDI note every time it hits the wall. Shape the motion with additional objects — Static, Bumper, Planet, and Repulsor — to create richer, more unpredictable interactions. Build evolving, generative patterns that shift organically over time. No two performances are ever the same. Define your harmonic space and select individual notes to craft any scale you need. Tap Scale Library to instantly load a preset scale: Major, Minor, Pentatonic, and many more. Features: • 8 physics scenes generating up to 16 MIDI CC streams (X and Y per scene) • Generative MIDI note sequencer with unlimited objects • Continuous or Trigger play mode, adjustable update frequency • Freeze button to instantly hold the current motion • Adjustable min/max range per scene to fine-tune CC output • Assign any CC or scene parameter as a modulation source • Static, Bumper, Planet, and Repulsor objects for richer motion • Built-in Scale Library with custom scale editing • Adjustable root note, base octave, octave count, and note duration • Notes custom mode (select the notes you want) • Preset import & export • Randomizer • Undo support • Built-in user guide • Background audio support • Full MIDI support & MIDI Mapping • Full AUv3 support — standalone or as a plugin in your favorite host • Universal app for iPhone, iPad, and Mac Questions or feedback? We'd love to hear from you: contact@fingerlab.net Stay tuned! The Fingerlab Team

About

Galaxy Brain

This app offers advanced audio manipulation with a frequency shifter and stereo delay. Create a wide range of effects, from lush choruses to choppy textures and sci-fi sounds, with flexible modulation options and optional hardware clipping for added grit.

Highlights
  • Frequency shifting with adjustable range
  • Stereo delay with tempo sync and ping-pong
  • Multiple modulation sources (LFO, envelope, sequencer)
  • Optional hardware clipping for drive and saturation
  • Morph settings for smooth parameter transitions
  • Auto bypass and HQ mode for optimized performance
Read full description

Galaxy Brain is a frequency shifter and delay combo ready to take any sound into outer space. With easy stereo controls, three modulation sources, and optional hardware clipping, things can go intergalactic very quickly. From thick chorus effects to choppy AM textures to space-laser SFX, it's all packed inside. Frequency Shifter - Range settings from 5 Hz to 5 kHz, each with its own character - Direction mixer enables tremolo and ring modulation effects - Modulate shift amount with LFO, envelope follower, and sequencer - Freely mixable modulation sources Stereo Delay - Free or tempo-synced delay time - Continuous ping-pong and LR delay time skew - Tone-shaping filters in the feedback path - Wet signal ducking - Adjustable glide time between delay values, up to 10 seconds Modulation - Stereo LFO with nine waveforms, warp, and swing - Envelope follower with optional sidechain input - Eight-step sequencer - Repeatable Random engine for consistent bounces Optional Hardware Clipping - Add drive and saturation at the output stage - Internal gain compensation for louder output at high settings Core Features - Morph Settings for smooth transitions between two complete configurations - Auto Bypass saves CPU when input is silent - AB settings comparison - HQ mode with 4x oversampling and ADAA - One-click loudness matching - All parameters automatable with precise playback - Light and dark interface modes - Internal undo/redo - Standalone app includes support, manual links and in-app purchase options for license purchase Two-week trial included, one-time purchase for full unlock. Unlock your plug-in via in-app purchase from the standalone app or activate in the plug-in using an existing desktop license. Your in-app purchase activates the plug-in on all of your iOS devices. Owners can claim a crossgrade code in the standalone app to receive a discount on a desktop license. Check out our YouTube: https://www.youtube.com/@sketchaudio Read the manuals: https://sketchaudio.com/manuals/

Screenshots

MIDIx4 screens
Galaxy Brain2 screens

Verdict

The call

The clearest difference is price: Galaxy Brain at Free against MIDIx's $8.99. MIDIx's advantage is in-app purchases (none vs 2) and update cadence (every 8 days vs every 3 weeks). On rating, ratings volume, ads and device support 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

Galaxy Brain is free to download; MIDIx costs $8.99 up front. Galaxy Brain sells 2 one-off in-app purchases. MIDIx asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for MIDIx against 5.0 for Galaxy Brain. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

UpkeepUpdate frequency

MIDIx ships an update every 8 days, Galaxy Brain every 3 weeks. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

Scorecard4 real differences · 6 level
MIDIx versus Galaxy Brain: the parameters behind the verdict, then further details
ParameterMIDIxGalaxy Brain
Price$8.99Free — better
Rating5.0 (2 ratings)5.0 (3 ratings)
Positive reviews100.0% of reviews—
Number of ratings23 — better
Update frequencyEvery 8 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.614.0 — better
Further details — not scored
Size17 MB13 MB
Age rating4+4+
DeveloperFingerlabSketch Audio, LLC

Customer experience

MIDIx

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Galaxy Brain

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

MIDIx

No in-app purchases

2 purchases

Galaxy Brain

One-time2
  • Two-week TrialFree
  • Full Unlock$9.99

Questions

Is MIDIx free?
MIDIx costs $8.99, with no in-app purchases.
Is Galaxy Brain free?
Galaxy Brain is free to download, with in-app purchases available.
Which has better reviews, MIDIx or Galaxy Brain?
MIDIx and Galaxy Brain are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.
Do MIDIx or Galaxy Brain have ads?
Neither MIDIx nor Galaxy Brain shows ads.
Which is updated more often, MIDIx or Galaxy Brain?
MIDIx ships an update every 8 days, and Galaxy Brain every 3 weeks. Most recently, MIDIx was updated on October 10, 2026 and Galaxy Brain on October 8, 2026.

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