Comparison

MIDI Designer Pro X vs LK

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

LK

This application acts as a remote control for Ableton Live and MIDI devices, enhancing electronic music production and live performance. It offers deep integration with Ableton Live and extensive MIDI capabilities for controlling software and hardware. The app is modular, with features available as separate in-app purchases.

Highlights
  • Ableton Live integration
  • MIDI device control
  • Clip launching and sequencing
  • Device parameter control
  • Virtual MIDI and AUv3 support
  • Modular in-app purchases
Features
Read full description

LK is a flexible remote control application for Ableton Live and MIDI devices, providing a wide range of features and functionality to enhance the production and live performance of electronic music. LK offers tight integration with Ableton Live using our free UBRIDGE desktop application, providing access and control of Ableton Live projects, with both wired and wireless connection options. LK has extensive MIDI capabilities too, allowing for communication and control of any MIDI compliant software or hardware, even apps running on the same device thanks to virtual MIDI support and AUv3 integration too. LK is split into six unique modules, each available as a separate in-app purchase, offering great value that you can tailor to your specific needs. LK is also capable of connecting with USB MIDI interfaces which allows you to interact with external gear. To connect LK to your host computer you will need to download and install a free software utility called UBRIDGE on your computer. It is available for Windows and macOS and it can be downloaded from Imaginando website. See our setup guide for further details in LK’s product page. MATRIX MODULE - Live Mode - In Live mode, you can control almost every aspect of Ableton Live directly from LK. The app mirrors your session view, allowing you to launch clips, add tracks and scenes, arm, solo, and mute tracks, and adjust track monitoring, volume, pan, and cue settings on the master track. You can create and edit clips with the powerful built-in clip composer, featuring tools like scales, swing, humanize, horizontal and vertical mirroring, time-shifting notes, pitch swapping, transposing, and even chord and melody generation within a defined range. LK also enables device control within each track, offering a range of generic layouts for quick access and instant parameter adjustments, so you can modify settings without needing to interact directly with your computer. - MIDI Mode - In MIDI mode, LK enhances workflow with a flexible, independent sequencing environment for streamlined composition and arrangement. Users can create and manage MIDI clips per track, arrange scenes, and send MIDI to other software or hardware. When loaded as an AUv3 in hosts like AUM, LK sequences and coordinates various instruments, perfect for complex setups and live performances. Essential editing tools like signatures, scales and transformative tools simplify MIDI editing, while automation and generative tools enable dynamic compositions. Follow actions and probability settings further smooth transitions, making performance arrangements seamless and spontaneous—all within a single, powerful interface. PADS MODULE - Get the MPC feel on your touchscreen with PADS, featuring an arpeggiator and a chorder. When working in Ableton Live mode it automatically maps drum rack pad names to each pad on the app - never miss a pad again. Use it in MIDI mode to quickly play other synth apps. CONTROLLER MODULE - Extensive control of 128 parameters with CONTROLLER. Use assignable and customisable knobs, faders, buttons and pads to control MIDI hardware, desktop and mobile DAWs - now with the power of AUv3 integration too. X/Y MODULE - Three dimensional parameter tweaking with X/Y PAD. This module can work with CC or NOTE events. In CC mode, a CC can be assigned per axis. In NOTE mode, X is pitch, Y is velocity and Z is Note ON/ Note OFF. CHORDER MODULE - Play chords like never before with the CHORDER module. Use this chord generator to build chords and lay them out according to your needs. KEYBOARD MODULE - KEYBOARD features 3-axis expression capabilities with scale and range controls. It also allows the possibility of mapping any Live or MIDI CC parameters to be controlled by the X and Y position within each of the keys, providing additional expression to the performance. It also has an MPE mode so you can use it with your favorite MPE compatible synths.

Screenshots

MIDI Designer Pro X4 screens
LK4 screens

Verdict

The call

The clearest difference is rating: MIDI Designer Pro X at 4.6 against LK's 4.3. MIDI Designer Pro X also leads on review sentiment (79% vs 64%). On price, 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

Both are free to download. MIDI Designer Pro X sells 14 in-app purchases, starting at $1.49 per month and LK sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

MIDI Designer Pro X holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 269 and 706 respectively. Written reviews point the same way: 79% of MIDI Designer Pro X's written reviews are positive against 64% of LK's.

UpkeepUpdate frequency

MIDI Designer Pro X ships an update every 11 days, LK fortnightly. Both last shipped on September 23, 2026.

Scorecard2 real differences · 8 level
MIDI Designer Pro X versus LK: the parameters behind the verdict, then further details
ParameterMIDI Designer Pro XLK
PriceFreeFree
Rating4.6 (269 ratings) — better4.3 (706 ratings)
Positive reviews78.8% of reviews — better64.2% of reviews
Number of ratings269706 — better
Update frequencyEvery 11 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.617.0 — better
Further details — not scored
Size205 MB125 MB
Age rating4+4+
DeveloperConfusion Studios LLCImaginando Lda

Customer experience

MIDI Designer Pro X

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

LK

All ratings706 ratings
Positive82.9%
Neutral4.7%
Negative12.5%
Written reviews388 reviews
Positive64.2%
Neutral7.5%
Negative28.4%

Bugs and requests

MIDI Designer Pro X

Not enough reviews yet to summarise bugs or requests.

LK

Reported bugs

5 issues
  • Clip renaming tool not working
  • Occasional MIDI note sticking
  • UI disappearing and requiring restart
  • Wireless connection randomly dropping
  • Exclusive track arming mode issues

Requested features

6 requests
  • Add MIDI CC mapping and automation
  • Implement vertical view for session mode
  • Allow saving and loading of custom settings
  • Improve MIDI note and velocity handling
  • Add MIDI transformers and generators
Show 1 more
  • Provide a discounted bundle for all modules

In-app purchases

14 purchases

MIDI Designer Pro X

Subscriptions10
  • MDPx Premium iPhone Only$1.491 Month
  • MDPx Premium iPad Only$2.491 Month
  • MDPx Premium iPad, iPhone$2.991 Month
Show 7 more
  • MDPx Premium Mac Only$4.491 Month
  • MDPx Premium Mac, iPad, iPhone$4.991 Month
  • MDPx Premium iPhone Only$14.991 Year
  • MDPx Premium iPad Only$24.991 Year
  • MDPx Premium iPad, iPhone$29.991 Year
  • MDPx Premium Mac Only$44.991 Year
  • MDPx Premium Mac, iPad, iPhone$49.991 Year
One-time4
  • Extra Features Pack$4.99
  • Automatic Backups$4.99
  • Audeonic Stream Byter Plugin$4.99
Show 1 more
  • MDPx Premium Lifetime$124.99
8 purchases

LK

One-time8
  • Unlock Step Sequencer$3.99
  • Unlock Chorder$4.99
  • Unlock MIDI Pads$4.99
Show 5 more
  • Unlock MIDI Controller$4.99
  • Unlock X/Y Pad$4.99
  • Unlock Keyboard$4.99
  • Unlock Matrix$9.99
  • All Modules Bundle$29.99

Questions

Is MIDI Designer Pro X free?
MIDI Designer Pro X is free to download, with in-app purchases available.
Is LK free?
LK is free to download, with in-app purchases available.
Which has better reviews, MIDI Designer Pro X or LK?
MIDI Designer Pro X is rated higher. MIDI Designer Pro X averages 4.6 out of 5 from 269 ratings, while LK averages 4.3 from 706 ratings.
Do MIDI Designer Pro X or LK have ads?
Neither MIDI Designer Pro X nor LK shows ads.
Which is updated more often, MIDI Designer Pro X or LK?
MIDI Designer Pro X ships an update every 11 days, and LK fortnightly. Most recently, MIDI Designer Pro X was updated on September 23, 2026 and LK on September 23, 2026.

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