Comparison

midimittr vs LK

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

Head to head
About

midimittr

This app enables low-latency MIDI connections to iOS music applications via Bluetooth LE or USB. It routes virtual MIDI ports to external devices, allowing seamless wireless or wired integration with compatible software.

Highlights
  • Low-latency MIDI over Bluetooth LE
  • MIDI over USB connection
  • Routes virtual MIDI ports
  • Connects to other MIDI devices wirelessly
  • Remembers routing settings
  • Works in background
  • MIDI over Lightning cable support
Features
Read full description

midimittr is a simple utility to deliver the experience of low-latency MIDI over Bluetooth LE/USB to iOS Music apps that support MIDI. To achieve this, midimittr is routing the virtual ports of supported applications to Bluetooth and/or the USB Ports. If your favourite application is supporting MIDI, it will most likely work with midimittr. Bluetooth over MIDI is supported in iOS 8+ and a feature of OS X Yosemite 10.10+. For more information please check out the support page. ---- - Connect to other Bluetooth MIDI Hardware, iOS or macOS devices wirelessly - Remembers previous routing settings for an uninterrupted workflow - Works in background - Get even lower latency with MIDI over Lightning cable* - Support for both iPad and iPhone ---- *For MIDI over Lightning cable please download the tool from the support page.

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

midimittr3 screens
LK4 screens

Verdict

The call

The clearest difference is in-app purchases: midimittr at none against LK's 8. midimittr also leads on review sentiment (91% vs 64%) and rating (4.5 vs 4.3). LK's advantage is ratings volume (708 vs 50). On price, update cadence, 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. LK sells 8 one-off in-app purchases. midimittr asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

midimittr holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: LK has 708 ratings behind it against 50, so its average is the more settled of the two. Written reviews point the same way: 91% of midimittr's written reviews are positive against 64% of LK's.

UpkeepUpdate frequency

midimittr ships an update every 2 weeks, LK fortnightly. The most recent releases landed on October 8, 2026 and October 18, 2026 respectively.

Scorecard6 real differences · 4 level
midimittr versus LK: the parameters behind the verdict, then further details
ParametermidimittrLK
PriceFreeFree
Rating4.5 (50 ratings) — better4.3 (708 ratings)
Positive reviews91.0% of reviews — better64.3% of reviews
Number of ratings50708 — better
Update frequencyEvery 2 weeks — betterFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size10 MB123 MB
Age rating4+4+
DeveloperMatthias FrickImaginando Lda

Customer experience

midimittr

All ratings50 ratings
Positive88.0%
Neutral6.0%
Negative6.0%
Written reviews67 reviews
Positive91.0%
Neutral1.5%
Negative7.5%

LK

All ratings708 ratings
Positive82.6%
Neutral4.8%
Negative12.6%
Written reviews392 reviews
Positive64.3%
Neutral7.4%
Negative28.3%

User reviews

midimittr

From 50 App Store ratings

What we love

  • 🚀 Seamless MIDI connection
  • 👍 Easy to use
  • 💡 Solves connectivity problems
  • 💰 Free of charge
  • 🔌 Works with USB and Bluetooth

Room to improve

  • 🐛 Crashes on M1 Mac
  • ❓ No manual or instructions
  • 😞 Developer unresponsive
  • ⚠️ Bluetooth connection issues
  • 🎛️ Toggles not visible on iPad mini

LK

From 708 App Store ratings

What we love

  • 🚀 Works perfectly
  • 🎹 Great for Ableton Live
  • 🎨 Powerful features
  • 👍 Intuitive and easy to use
  • 💯 Excellent app

Room to improve

  • 🐛 Occasional crashes and bugs
  • 🔌 Connection issues and unreliable wireless
  • 💰 Expensive with separate module purchases
  • 🤔 Confusing setup and documentation
  • 🔋 High battery drain

Bugs and requests

midimittr

Reported bugs

6 issues
  • 'IOS Audio' crashes app on M1 Mac
  • Disables iPad as audio input on M1 Mac
  • Connection problem with older iOS and Yamaha MD-BT01
  • Toggles not visible on iPad mini
  • App keeps giving pop-ups asking to turn on Bluetooth
Show 1 more
  • Only one device gets MIDI back when two are connected

Requested features

5 requests
  • Auto-reconnect for Bluetooth
  • Logging function with freeze/save and filter
  • Dark mode
  • Audio transmitting as in-app purchase
  • Option for client BT connections to auto-connect

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

None

midimittr

No in-app purchases

8 purchases

LK

One-time8
  • Unlock Chorder$4.99
  • Unlock MIDI Pads$4.99
  • Unlock MIDI Controller$4.99
Show 5 more
  • Unlock X/Y Pad$4.99
  • Unlock Keyboard$4.99
  • Unlock Step Sequencer$7.99
  • Unlock Matrix$9.99
  • All Modules Bundle$39.90

Questions

Is midimittr free?
midimittr is free to download, with no in-app purchases.
Is LK free?
LK is free to download, with in-app purchases available.
Which has better reviews, midimittr or LK?
midimittr is rated higher. midimittr averages 4.5 out of 5 from 50 ratings, while LK averages 4.3 from 708 ratings.
Do midimittr or LK have ads?
Neither midimittr nor LK shows ads.
Which is updated more often, midimittr or LK?
midimittr ships an update every 2 weeks, and LK fortnightly. Most recently, midimittr was updated on October 8, 2026 and LK on October 18, 2026.

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