Stompbox arrives

4Pockets iPad version of Pocket Stompbox lands. Here’s what to expect:

StompBox is an application that turns your iPad into a fully fledged digital effects unit, complete with chromatic guitar tuner, metronome and loop recording tools. StompBox allows you to build a rack of effects in any order and then save your settings as patches that can be recalled at the press of a button.

With StompBox you get the best of both worlds, a rack of professional sounding stereo effects (with far more control than simple foot pedals) and a foot controller to access a tuner and all your patches.

Simply listen through a pair of headphones, or attach to an external amplifier or hifi to truly experience the program in all its glory! StompBox uses stereo routing between effects, which results in a very professional sounding experience.

In order to use StompBox you need a way of connecting your guitar. The simplest way to accomplish this is to use an iRig adaptor (sold separately), but if you have a camera kit you may be able to use an inexpensive USB sound card.

StompBox comprises 17 unique effect modules such as delay, reverb, flanger, phaser, chorus, pitch shifter, tremelo etc. We have also included a noise gate, compressor, parametric and graphic equalizers so that you can create many unique and interesting tones. There are 7 types of distortion effect available (from overdrive, to fuzz to full out classic distortion) as well as custom amplifier EQ’s, so plenty of scope for all types of music!

Once you have built up a library of patches, you can use the virtual foot controller to quickly and easily move between patches. The Virtual Foot controller gives instant access to all patch parameters and amp settings, with the ability to enable and disable individual effects at the touch of a button. If you want to modify an effect parameter, simply scroll the effect rack into view and make your changes. The foot controller has a virtual whammy bar which can be controlled using the touch screen or optionally using the accelerometer. A tap tempo button is also available to synchronize all time based effects.

StompBox includes a Metronome which you can use for practicing or alternatively you can load your favorite MP3s into the Media Player and play along. The Media Player even has the ability to slow down the music without effecting pitch so you can play along at your own pace. You can even loop a particular part of a song so it plays over and over again!

StompBox also features a 4 track loop recorder. This allows you to record your own backing track which can also be looped, just like the Media Player. You can record up to 4 non-destructive overdubs and even save a mixdown for posterity!


  • 17 Unique Effects
  • 7 Types of Distortion Effect
  • Chain upto 12 Simultaneous Effects
  • Media Player with Time Stretching
  • 4 Track Loop Recorder
  • Metronome
  • Chromatic Tuner
  • Stereo Routing
  • Save 12 banks of 6 patches
  • Virtual Foot Controller
  • Virtual Whammy Pedal
  • Tap Tempo
  • Built In FTP
  • Comprehensive Help
  • Effect Synchronization with Metronome
  • USB Camera Kit Supported
  • iRig Compatible
  • 3 Unique Skins


iPads at the Apple Store Clip to Evernote


  1. Incredible. Now THAT is how to make a guitar toolkit on the iPad. It was a clear instant purchase for me. Now i have to wait until I get back from work to play with it properly and review it.

    Thank you 4pockets!

  2. I did have a chance to play a bit before work. I've put up a review in the US app store.

    First impressions:
    * Looks like Guitar Rig
    * Sounds fantastic (a little weak on distortion)
    * Latency is noticeable – maybe 30-50ms on ultra-low settings? There are other apps with similar latency. I need to reboot my ipad tonight and test it again.
    * The bang-per-buck argument is a no brainer – all the FX are included for the purchase price.
    * The tools are fantastic (again, a lot like a portable Guitar Rig)
    * The interface is fantastic – very well thought out, and the portrait/landscape modes just make so much sense.
    * 4 track recorder built in!

    So for a beginner guitarist like me it is near perfect. I got the lite version of Amplitube and the free versions of Ampkit and iShred Live, but I held out for this once I saw the demo. Very glad I did.

    An axe-pro with experience of expensive and various amps, cabs etc might prefer the modelling of, say, Ampkit or Amplitube, but for me this is the best.

  3. I'm curious about that USB Camera Kit support, does that mean audio in? That's pretty cool if so.

    Latency would be a big bother to me. And hopefully they will put out a free version that let's you pick and choose the effects you want with in-app-purchase.

    It looks great though. Thanks for the info robman!

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