Free Caustic Editor For Volca Sample Now Available For iOS


Developer Rejean Poirier has released Caustic Editor For Volca Sample – a free waveform editor to import, load, record, edit and upload samples for use with the Korg Volca Sample.

Volca sample-specific features:

  • Upload to any of the 100 sample slots
  • Clear all samples
  • Restore factory samples
  • Monitor device memory


  • Audiobus compatible (receiver)
  • AudioShare compatible (import/export)
  • AudioCopy/Paste compatible (import/export)
  • iTunes file sharing support
  • Open In… support for .wav files.
  • Supports any uncompressed, mono or stereo WAV, at any sampling rate or bit depth.
  • Apply any of 16 of Caustic’s effects and preview them in real-time, then stamp down and apply more.
  • Process waveform audio with Fade In/Out, Normalize, Amplify, Reverse operations and more.
  • Use Caustic’s C-SFXR to generate retro video game samples.
  • Trim audio precisely, down to individual samples.
  • View the frequency spectrum of your audio.
  • Compatible with iPhone, iPad, and iPod touch.

Caustic Editor is now available as a free download in the App Store.

Note: This is not an official Korg app – it is made by Rej Poirier / SingleCellSoftware using the KORG volca sample SDK. Versions are also available for Mac, Windows & Android.

If you’ve used Caustic Editor for iOS, leave a comment and let us know what you think of it!

14 thoughts on “Free Caustic Editor For Volca Sample Now Available For iOS

    1. This is the loop builder app I’ve been waiting for. It has Audio/Copy/Paste and open from AudioShare. All the Caustic FX and is very easy to use and FREE!

    1. iron.buddha – We updated the post to make it clear that “Now Available For iOS” includes iPhone, iPad, and iPod touch.

      Rej – thanks for the professional response!

  1. Well thanks to Rej and this excellent little app, I was able to use AudioCopy and iTunes file sharing support to grab exports from Gadget without uploading to Dropbox or Soundcloud. Brilliant.

    One slight irritation is that iTunes file sharing won’t let me browse inside the Caustic Editor “samples” folder (to save individual WAVs), unless I’m missing something…

    1. Ah.. true, sorry. Honestly iTunes was added because it’s really easy to enable on a project and some people like to backup their entire app, but it really sucks as a way to retrieve individual files. I probably should have put everything in the same flat documents directory though. I think ACP and AudioShare are way better options for individual WAVs but I know it’s not all apps that offer support for those.

      As a workaround / solution, if you only need to access a few files from iTunes, go into the WAV editor from any slot, press File..Load, then long-press the WAV file you need until the “File operations” menu comes up and then select Copy or Cut. Then go up to the parent folder (should be empty apart from the “samples” folder) long-press inside the empty gray area and hit Paste. Your file is now where iTunes can see it.

  2. Hi. First of all – Thank you for the app. Now i don’t have to get an iphone. My question is, if i load 44.100khz 24bit samples to the volca through this app, does it convert them to 31.25kHZ, 16-bit? It says in the volca specs that the volca can handle 31.25kHZ, 16-bit sampling rate.

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