Comparison

MIDI Designer Pro X vs KeyPad MIDI Controller

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

Head to head
About

MIDI Designer Pro X

Create custom MIDI controllers for any MIDI-enabled hardware or software. Offers extensive customization, a large user-created layout library, and robust MIDI communication. Ideal for musicians and producers seeking a personalized control experience.

Highlights
  • Control any MIDI-enabled device
  • Network, Bluetooth, and USB MIDI
  • Extensive user layout library
  • Customizable control surfaces
  • Advanced MIDI transformation features
  • Ableton Link integration
Features
Read full description

MIDI Designer Pro X (MDPx) is the culmination of over a decade of improvement. We launched MIDI Designer Pro in 2012 and relaunched it in 2016 as MIDI Designer Pro 2. MDP2 was the first and only professional-grade MIDI controller built natively for iOS, earning critical acclaim. Since launch, over 80 updates have greatly expanded its capabilities. Our user-created library now covers 375+ MIDI targets across music hardware and software. In 2024, MDPx took a significant leap forward with the expressive "Spaceship" theme on iPad and Mac and major iPhone usability advances. It now adds AUv3 support in hosts such as AUM, Cubasis, and Logic. A new subscription model — Premium — allows even more users to use the App in their music-making and discover the App Store's best MIDI controller for themselves. CAPABILITIES • Control all MIDI-enabled hardware and software: keyboards, synths, effects, pedals, DAWs, plug-ins, DJ, VJ & lighting rigs, other iOS apps, robots, cruise ships, rail guns, particle accelerators • AUv3 MIDI Processor Extension: Host MDPx inside AUM, Cubasis, Logic, and other AUv3 hosts. • Solid MIDI Communications Infrastructure: Sets the industry standard for reliable and robust MIDI interactions over Network, Bluetooth and USB. • Active Community of Authors: A vibrant ecosystem supporting legacy and current music synthesizers, sound engines, DAWs, and all MIDI-controlled devices. • Extensive User Layout Library: More than 350 layouts for over 80 manufacturers, contributed by the Community. • Comprehensive Support: Whether you're just starting or tackling complex MIDI implementations, with the Community we are here to assist. • MIDI Designer's 'Superpowers': A suite of powerful features exclusive to MIDI Designer that we have developed over the last 10+ years, including: • Ableton Link and Link Control Loopers • Supercontrols and subcontrols as the basis for many features (with no scripting!): • Snap sub to value over time • Sequential subs • Subcontrol chaining • Button groups (radio buttons) with Bounceback™ • Steppers • Live Transpose • Group Presets • Named Ticks • Accelerometer • Simplified Sysex Messages with variables and bit changers • Snap to Value over Time • Global Presets • Pedalboards • Popup Panels (Show/Hide) • Two-up Page Layout for iPad/Mac • Streambyter Plugin by Audeonic for advanced MIDI transformation MDPx is easy to use, infinitely flexible and customizable, and battle-tested in performance. It's the only professional-grade MIDI controller built from the ground up for iOS to control ANYTHING via MIDI. dream | create | play COMMUNITY The MIDI Designer Community has built layouts for popular MIDI targets. Here are just a few: • Ableton Live • Air Music Tech: Xpand!2 • Arturia: Synclavier V, Analog Lab 4 • Audiofier: Riffendium • Chase Bliss: Mood MKII, Reverse Mode C, Thermae • Clavia: NORD LEAD 4 • DSI: Prophet 12 • Elektron: Octatrack MKII • E-MU: Planet Phatt • Eventide: Pitchfactor, Modfactor • Fractal: Axe-FX • Hauptwerk: St. Anne's Symphonic Organ • Kawai: K1, K1r • Korg: Volca Series, 707 • Line 6: POD X3, POD XT, POD HD500, POD Go • Meris: Enzo, Polymoon • M-Audio: Venom • Novation: MiniNova • Moog: Voyager, Animoog, Little Phatty, Slim Phatty, MF-104m Analog Delay • Omnisphere • Pigtronix: Infinity Looper • Roland: Jupiter-Xm, RD-2000, RD-88, FA-06/FA-07/FA-08, VG-99, JX-3P, JX-8P, MKS-30, MKS-50, MKS-80 • Sample Logic: Morphestra 2 • Sonokinetic: Noir • Soundiron: Steel Tones • TC Electronic: Nova Drive NDR-1 • ValhallaDSP: ÜberMod, VintageVerb, FreqEcho, Shimmer, Room • Yamaha: DX7 (TX7), TQ5, SY77 (TG77), DX21, Reface DX, AN200/PLG-100AN/AN1X FIND OUT MORE Web: midiDesigner.com/mdpx Community Layouts: midiDesigner.com/community Manual: midiDesigner.com/manual EULA: apple.com/legal/internet-services/itunes/dev/stdeula

About

KeyPad MIDI Controller

Transform your device into a professional MIDI controller with touch-optimized piano keys, drum pads, and performance controls. It supports SFZ, SF2, WAV, and M4A samples, and can control iOS apps, hardware synths, and Mac software wirelessly or wired.

Highlights
  • Touch-optimized piano keyboard
  • 9-pad drum grid
  • XY performance pad
  • Built-in sound engine (SF2, SFZ, WAV, M4A)
  • AUv3 plugin support
  • Network MIDI for Mac control
  • Aftertouch and MPE expression
Features
Read full description

Transform your iPad or iPhone into a professional MIDI controller with a touch-optimized piano keyboard, isomorphic grid, drum pads, and XY performance controls. Control iOS apps, hardware synths, and Mac software wirelessly or wired, as a standalone app or an AUv3 plugin in your favorite DAW. Perfect for mobile producers, live performers, beat makers, and sound designers. CORE FEATURES • Built-in sound engine for SF2, SFZ, WAV, and M4A. • Piano keyboard, isomorphic grid, 9-pad drum grid, and XY performance pad. • Scale mode with 12 scales and any root key, on both piano and grid. • Aftertouch and MPE with Mono AT, Poly AT, and XY MPE modes. • Aftertouch and Mod Wheel remapping to any MIDI CC or Pitch Bend. • Velocity, Pitch Bend, and Modulation faders, plus a latching sustain button. • AUv3 plugin for GarageBand, AUM, Cubasis, BeatMaker, and Drambo. • Network MIDI, OSC output, and 16 MIDI channels + Omni. • Adaptive interface for all iPad and iPhone sizes. VIEW MODES Switch between five layouts from the View menu: Piano: a familiar 2-octave keyboard with height-based velocity. Grid: Isomorphic: every row and column keeps the same interval, so chords and scales have one shape anywhere. Grid: 2 Rows: a piano-style pair of rows, naturals below, sharps above. Grid: Minor Thirds: columns step up by 3 semitones, rows move chromatically. Grid: Big Piano: large naturals with quarter-size sharps. Your view, layout, and root note persist across sessions. SCALE MODE Choose from 12 scales - Major, Natural Minor, Harmonic Minor, Melodic Minor, Dorian, Phrygian, Lydian, Mixolydian, Locrian, Pentatonic Major, Pentatonic Minor, Blues, and Whole Tone - in any of the 12 root keys. On the grid, cells remap so only in-scale notes are laid out, putting every note under your fingers. On the piano, the keyboard keeps its familiar shape - the black and white pattern is how you find your place without looking. Rather than move notes around, out-of-scale keys dim and stop responding to touch, so only the keys in your key are labelled and playable. Wrong notes are simply out of reach. Switch back to Chromatic anytime for the full keyboard. GRID EXPRESSION Every grid layout includes a dedicated mod-wheel row. A vibrant gradient highlights roots and notes, optional labels show note names, and per-note MPE with pitch bend gives each finger independent control. BUILT-IN SOUND ENGINE Play sounds directly without any external app. Load SF2 SoundFonts with multi-preset selection, or import SFZ, WAV, and M4A samples. The low-CPU engine maps samples across the keyboard automatically, and sound files persist across sessions. AFTERTOUCH & MPE EXPRESSION Add expressive depth with four aftertouch modes. Mono AT applies uniform pressure across chords, Poly AT sends independent pressure per note, and XY MPE allocates per-note MIDI channels (2-16) with Y on CC74 and X on Pitch Bend. Remap aftertouch or mod wheel to any MIDI CC or Pitch Wheel. A green gradient on pressed keys shows pressure in real time. CONNECT TO YOUR MAC Control Logic Pro, Ableton Live, or any Mac music software from your iPad or iPhone. Connect wirelessly over your local network with Bonjour, or plug in via USB for a rock-solid, zero-latency link. STANDALONE OR AUV3 Load KeyPad inside GarageBand, AUM, Cubasis, BeatMaker, Drambo, or any AUv3 host to play your instruments without switching apps, with settings saved in your project. Or run it standalone to drive hardware synths, route MIDI to other iOS apps, or control your Mac. TOUCH-OPTIMIZED PERFORMANCE Height-Based Velocity: Touch keys at different vertical positions for dynamic velocity, with three curves to shape the response. XY Performance Pad: Control two parameters at once with multi-touch. Assign any MIDI CC to each axis for filter sweeps, effect morphing, or live sound manipulation. Smart Layout: Scales to the window, keeping the full layout with controls and pads on iPhone, iPad, Split View, and AUv3 plugin.

Screenshots

MIDI Designer Pro X4 screens
KeyPad MIDI Controller3 screens

Verdict

The call

The clearest difference is in-app purchases: KeyPad MIDI Controller at none against MIDI Designer Pro X's 14. KeyPad MIDI Controller also leads on rating (4.9 vs 4.6) and review sentiment (100% vs 79%). MIDI Designer Pro X's advantage is ratings volume (269 vs 14). On price, 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

Both are free to download. MIDI Designer Pro X sells 14 in-app purchases, starting at $1.99 per month. KeyPad MIDI Controller asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

KeyPad MIDI Controller holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: MIDI Designer Pro X has 269 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 79% of MIDI Designer Pro X's written reviews are positive against 100% of KeyPad MIDI Controller's.

UpkeepUpdate frequency

MIDI Designer Pro X ships an update every 11 days, KeyPad MIDI Controller every 3 days. The most recent releases landed on October 12, 2026 and October 1, 2026 respectively.

Scorecard7 real differences · 3 level
MIDI Designer Pro X versus KeyPad MIDI Controller: the parameters behind the verdict, then further details
ParameterMIDI Designer Pro XKeyPad MIDI Controller
PriceFreeFree
Rating4.6 (269 ratings)4.9 (14 ratings) — better
Positive reviews78.8% of reviews100.0% of reviews — better
Number of ratings269 — better14
Update frequencyEvery 11 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.615.0 — better
Further details — not scored
Size205 MB13 MB
Age rating4+4+
DeveloperConfusion Studios LLCDiscoDSP LLC

Customer experience

MIDI Designer Pro X

All ratings269 ratings
Positive90.3%
Neutral2.2%
Negative7.4%
Written reviews165 reviews
Positive78.8%
Neutral4.2%
Negative17.0%

KeyPad MIDI Controller

All ratings14 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

14 purchases

MIDI Designer Pro X

Subscriptions10
  • MDPx Premium iPhone Only$1.991 Month
  • MDPx Premium iPad Only$3.491 Month
  • MDPx Premium Mac Only$4.491 Month
Show 7 more
  • MDPx Premium iPad, iPhone$4.491 Month
  • MDPx Premium Mac, iPad, iPhone$7.991 Month
  • MDPx Premium iPhone Only$19.991 Year
  • MDPx Premium iPad Only$34.991 Year
  • MDPx Premium Mac Only$44.991 Year
  • MDPx Premium iPad, iPhone$44.991 Year
  • MDPx Premium Mac, iPad, iPhone$79.991 Year
One-time4
  • Extra Features Pack$4.99
  • Automatic Backups$4.99
  • Audeonic Stream Byter Plugin$4.99
Show 1 more
  • MDPx Premium Lifetime$199.99
None

KeyPad MIDI Controller

No in-app purchases

Questions

Is MIDI Designer Pro X free?
MIDI Designer Pro X is free to download, with in-app purchases available.
Is KeyPad MIDI Controller free?
KeyPad MIDI Controller is free to download, with no in-app purchases.
Which has better reviews, MIDI Designer Pro X or KeyPad MIDI Controller?
KeyPad MIDI Controller is rated higher. MIDI Designer Pro X averages 4.6 out of 5 from 269 ratings, while KeyPad MIDI Controller averages 4.9 from 14 ratings.
Do MIDI Designer Pro X or KeyPad MIDI Controller have ads?
Neither MIDI Designer Pro X nor KeyPad MIDI Controller shows ads.
Which is updated more often, MIDI Designer Pro X or KeyPad MIDI Controller?
MIDI Designer Pro X ships an update every 11 days, and KeyPad MIDI Controller every 3 days. Most recently, MIDI Designer Pro X was updated on October 12, 2026 and KeyPad MIDI Controller on October 1, 2026.

Other comparisons