Hokusai is a multitrack audio editor for iPhone, iPad or iPod touch. Record or import a track, and make it sound the way you want it to: not just trimming the ends, but full cut, copy, paste and delete, and a suite of filters and special effects available.

"Beautiful clutter-free interface" —

"Hokusai will convince you that audio was meant to be edited with a touch screen — it's just so natural within this app that you’ll find yourself consistently coming back to it." — iOS Music And You

Edit many tracks side-by-side, mix them together, and export to Wave or MP4 format — then transfer them to your computer, send them to another app on your device, or upload to cloud services.

Hokusai is streamlined to give you a clean, clear view of your tracks. Use the familiar pinch and swipe gestures to zoom right in and fiddle with fine detail, or step back to see the big picture. Select pieces of audio. Live "scrubbing" means you can hear the sound under your fingertip as you make your adjustments. And you needn't fear a bad edit with our full undo/redo support — even after closing your project.

Hokusai comes free with a set of useful tools such as fade in/out, normalise volume levels, reverse time, and basic synthesis. If you need more power, you can upgrade from inside the app to add new tools and effects, including: Per-track volume/mute/panning, selecting across multiple tracks at once, presets and favourites, grain synthesis, noise gating, time-stretching, pitch-bending, echo, reverb, modulation (AM & FM), resonance, distortion, grunge, vocal levelling, monster voice, high/low/band-pass/notch-cut filter and more — many of which can be previewed live.

What’s New

Version 2.5.6

Fixes a compatibility issue when run on iOS 13.

Ratings and Reviews

3.9 out of 5
56 Ratings

56 Ratings

Tonchito 626 ,

Good app

This is a good app if you want to edit audio on your phone. I bought pro and it is like having a more portable version of audible.

It’s over all good but it has its problems.

When copying and pasting, it takes up unnecessary amount storage.

I pasted a 5 second audio clip and it took up 299mb on my phone. This adds up and a min can eat up around 2GB on your phone. I don’t know how to fix this.

So other than that, it’s good but requires lots of space to function.

Developer Response ,

Hello! Audio files can take up a lot of space, and Hokusai is designed for highly detailed editing of small pieces of audio, so it uses a high-quality format to store the audio, to preserve the best quality while editing. If you don’t need this, or are editing very long pieces of audio, you might find one of our other apps, Ferrite Recording Studio, a better match for your needs. You can read about the differences between Hokusai and Ferrite, and why each works the way that it does, at:

That said, the format used by Hokusai takes (very approximately) 1GB per hour for mono, 2GB per hour for stereo. If you’re seeing 2GB per minute, please contact Customer Support using the link inside the tools menu so that we can investigate why. Thanks!

Meowzer L Sassafras ,


really easy to use, and it has a lot of awesome features! :)

1squarefoot ,

U will mot regret

Purchasing this is rock solid and has soo many fee-churz...⚔️

App Privacy

The developer, Wooji Juice Ltd, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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