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 2.3.2

Hokusai 2.3.2:

• Various fixes and improvements

Previously in Hokusai 2.3.x:

When running on iPad OS 13:

• Multiple Window Support

When running on iOS 13:

• Dark Mode support
• New iOS 13-style button icons
• New menus on projects for easy access to sharing, duplicating and deleting projects
• New editing gestures for undo/redo, cut, copy and paste
• Import from USB storage devices

For all users:

• Saving out audio from one Hokusai project to create a new one
• Additional accessibility and keyboard shortcut commands for tracks
• Various other fixes and improvements

Ratings and Reviews

4.0 out of 5
210 Ratings

210 Ratings

20M13P02 ,

Efficient but buggy

This is an amazing app! I’ve been using it to cut my music and it works miracles (most of the time). There are some times when I would select a region to begin cutting, and then it would just automatically slide to some other spot. Or I would slide the cutter to cover the region I want to delete, and then it would just shrink to where I selected it. Over and over again. This is probably the only complaint I have regarding this and it is rather frustrating to deal with. Please take this into consideration and hopefully make changes to fix this bug. Thank you for reading

Developer Response ,

Hello! Hokusai automatically adjusts your selection to the nearest "zero crossing" to ensure a clean, glitch-free edit, but you can switch this off if you don't want it to. Go to the Tools menu > Settings > Snap to Zero Crossings and set it to "Never" to switch this behaviour off. If you need more information about zero crossings and why they're important to editing audio, please get in touch via the Contact Customer Support link in the Tools menu. Thanks!

letthemeatwords ,

Noise Reduction Feature ACTUALLY WORKS!

This app is super intuitive and very easy to learn. The basic version is pretty solid by itself, but upgrading to premium was worth it just for the noise reduction feature alone (the main reason why I downloaded this app). I tried it twice, the first time it took away all the background noise but my voice sounded like it was in a cave, and the second time it took away all the background noise and my voice was left sounding exactly the same. So there was some trial and error involved, but not much. The AI is not perfect, but that’s OK. It has worked for me once for so far, and that is more than I can say for any other voice recording app!

Colton Lee Clement ,

It’s good but it needs improvement

I’ve been using this app for quite a while and so far, my only complaint is that you can’t just simply edit audio from a video on your phone. I always have to download my sounds and music off the internet with another app so I can turn it into an audio file. I shouldn’t have to worry about it when the app should be taking care of this. Also, there is a files app that apple has made where you can move videos to it and it works with Hokusai, but whenever I try to select what I want to edit, the thumbnail is faded and wont let me select it. The app is well organized and is easy to use, but if you can’t edit anything you have on your phone, then what’s the point in downloading the app?


Wooji Juice Ltd
12.4 MB

Requires iOS 12.4 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
Rated 4+
© 2011-2019 Wooji Juice
In-App Purchases
  1. Hokusai 2 Pro Pack $9.99
  2. Hokusai 2 Pro Pack (Upgrade) $4.99


  • Family Sharing

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

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