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By Dmitry Klochkov

This app is only available on the App Store for iOS devices.


ChordUp is a chord musical instrument and MIDI controller with a unique fast-access chord selector.

Unique chord selector allows you to play any available chord instantly. You don't need to make any pre-configurations or presets. Just tap on the key button and slide your finger to the required chord type. With a little practice you will be able to select any chord in a fraction of a second.

Three playing surfaces allows you to easily play any rhythm pattern: power chords, full chords, bass and chord, strumming or arpeggios.

You can use ChordUp to control your favourite soft or hard synthesizer through Core MIDI connection or though Audiobus 3 MIDI ports.

• 108 available chords (9 chord types for each of the 12 notes).
• 10 embedded instruments: Acoustic Piano, Electric Piano, Guitar, Organ, Accordion, Vibraphone, Strings, 3 synth sounds.
• 12 pads surface (for piano like parts)
• 6 strings surface (for guitar strumming, power chords and arpeggios)
• Expression pad surface (allows to play full chords and control an expression parameter at the same time)
• Smart sustain. With the sustain enabled, when you switch chords, only the notes of the current chord that don't belong to the next chord are muted.
• Octave shifting.
• Chord locking. You can lock one chord type for a chord button.
• Buttons size adjustment on iPad.
• CoreMIDI support.
• Audiobus support (Audio sender port, MIDI sender port)

What's New in Version 1.3.0

ChordUp now provides Audiobus audio sender port and MIDI sender port.

Control buttons are now placed only by the corners of chord selector grid, minimising the chance of accidentally tapping on them when selecting a chord.

You can now enable and disable mute gesture and adjust the delay parameter for it.

-Menu remade
-UI polished
-Minor bug fixes


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Customer Reviews

Wow! Works Flawlessly With GeoShred!!

This latest update really put This app over the top! I had it controlling GeoShred via strumming mode and it really does a great job! If you have GeoShred try the Warm Acoustic Guitar preset and you'll be blown away!

Thanks so much for creating amazing apps that help us make music!

One wish I have though and perhaps it's just user ignorance, but when I'm strumming and say my song goes G-D-Eminor-C
When I go from D to E-Minor it is a two step process. I really wish I could say lock the E-minor chord and use all the available variations in the little box but have it remain locked while I play the other chords in the progression so that when I return to play it and call up E, the E-minor is there ready to go!

Second when I put the app in landscape Mode on my iPhone, the strumming Strings always go to the left. I wish they went to the right automatically. No biggie as I can rotate and then lock my screen but one extra step I'd like to eliminate.

These are my only wished which would make this app super awesome!

Again,! Thanks Mr. Developer for all your amazing work and this is truly a must have app for any serious IOS musicians out there.

I highly recommend this app!


Update: just saw YouTube video where Dmitry shows how to lock chords! Simply awesome!

View in iTunes
This app is designed for both iPhone and iPad
  • $3.99
  • Category: Music
  • Updated:
  • Version: 1.3.0
  • Size: 45.9 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

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