Milky is a tiny MIDI effect processor app that sits between a MIDI Controller and DAW software. It can adjust keyboard sensitivity, invert the sustain pedal polarity, route messages to different channels, and more.

How does it work?
Typically MIDI Controller is connected directly to the DAW (Digital Audio Workstation):
[MIDI Controller] -> [DAW]

In case you need to change the output of the MIDI Controller (e.g., adjust velocity or transpose notes), Milky comes into the equation. All you need is to put Milky in between:
[MIDI Controller] -> [Milky] -> [DAW]

In this setup, notes come from your MIDI Controller into Milky. Milky adjusts the velocity or tone of these notes and outputs them. DAW software of your choice listens to 'Milky Output' and plays/records them.

Easy setup:
- connect MIDI Controller and turn it on
- select that MIDI Controller in Milky
- select 'Milky Output' in your DAW*

*NOTE: Garageband does not allow MIDI input selection and, therefore, cannot work with Milky properly.


Premium features in Milky are only available with a paid subscription. Payment will be charged to iTunes Account at confirmation of purchase and auto-renews at the same price unless disabled in iTunes Account Settings at least 24 hours before the end of the current period. Your subscription can be managed in your iTunes Account Settings. No cancellation of the current subscription is allowed during the active subscription period.

Premium features include Sustain Pedal, Keyboard Split, Velocity Switch Channel, Channel Remap, and Compressor modules.

Privacy policy:

What’s New

Version 1.3

New Modules:
= Compressor
= Channel Remap

Bugs fixed:
= SysEx messages were not passing through Milky correctly
= AllKeys module was changing sensitivity for non-note messages
= VelocitySwitchChannel was sending NoteOff messages to the wrong channel if the NoteOff velocity was above the threshold


Andrii Kosovych
3.3 MB

macOS 10.13.2 or later, 64-bit processor



Age Rating
In-App Purchases
  1. Premium Annual $11.99
  2. 3 Months Premium $2.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.