Tone Ninja

In development for iOS

Your tones.
Your Katana.
All together.

Less time managing tones. More time playing.

Browse new tones, keep your favorites together, and shape your sound in a way that makes sense to you.

Ask about the beta Explore the app

Being built for iPhone and iPad. Not yet on the App Store.

Tone Ninja artwork: a ninja guitar pick, a katana blade, and a purple-to-teal sound wave.
A little ninja. A lot of tone.
Made for BOSS Katana players Library. Editor. Your sound.

A home for your sound

Keep the good tones.
Keep playing.

Your favorite sounds deserve better than a folder of files. Tone Ninja brings the everyday parts of your tone workflow into one mobile workspace.

Find your favorites.

Organize tones and LiveSets, import compatible .tsl patches, and keep useful versions as your sound evolves.

See Library & Perform

Edit your way.

Follow the signal chain in Classic, make musical adjustments in Shape, or explore your settings visually in Sound.

Explore the three views

Find a new starting point.

Browse BOSS Tone Exchange and Guitar-Tones.com inside the app, then download compatible tones into your library.

See in-app browsing

Live Editor

Three ways to make it yours.

Know every knob, or just know what you want to hear? Choose the view that fits. All three work on the same tone, so switching keeps your edits and Undo history.

Classic

A familiar editor, broken down by signal chain. The amp controls and effect amounts you reach for most come first; open each block for the details.

Shape

Start with what you hear. Try Cleaner or Dirtier, Darker or Brighter, Drier or Wetter. Small or Bigger nudges adjust related settings, with Undo when you want to try again.

Sound

See how your tone is put together. Drive, Tone, Motion, Space, and Output group settings by what they do, with visual controls and maps that make them easier to explore.

Development screenshots on iPad. Select a screenshot for a closer look.

Shape your tone by ear.

Plain-language directions help you experiment without needing to know every amp parameter.

Shape view with musical adjustments grouped into Drive, Tone, Motion, and Space. View full screenshot

Get a picture of your settings.

Sound brings gain, EQ, movement, and ambience into one overview. Open a group to explore its controls.

Sound view showing gain sliders, EQ bars, and visual maps of modulation, delay, and reverb settings. View full screenshot

Connected to a compatible amp? Turn on Hear on Amp to hear your edits as you play. Save a variation, compare it with the loaded tone, or return to your earlier settings.

In-app tone browsing

Find your next tone.
Bring it straight in.

Browse BOSS Tone Exchange and Guitar-Tones.com from inside Tone Ninja. Download a compatible Katana .tsl file and add it to your library, ready to preview and make your own.

BOSS Tone Exchange and Guitar-Tones.com are third-party services. Tone Ninja is not affiliated with or endorsed by either.

BOSS Tone Exchange

Search and filter Katana patches in the built-in browser. Roland account required.

Tone Ninja’s in-app BOSS Tone Exchange browser, with source tabs and Katana search and sorting controls. View full screenshot

Guitar-Tones.com

Explore patches by amp and bring compatible downloads into Tone Ninja. No account required.

Tone Ninja’s in-app Guitar-Tones.com browser showing patch collections for different Katana models. View full screenshot

Choose patches for your Katana model and generation. A downloaded tone still needs effects and settings supported by your amp.

Library & Perform

Keep it close.
Get back to playing.

Give your saved tones and LiveSets a home, then put your connected amp’s everyday controls within reach.

Your favorites, together.

Search tones and packs, preview a saved sound, or open a LiveSet. Import and export compatible .tsl files as your collection grows.

Library view with search, tone and pack filters, saved tones, and LiveSets. View full screenshot

Quick controls in Perform.

Switch channels and toggle supported effects from one view, with your amp’s current choices and effect names visible at a glance.

Perform view showing channel banks, named effects, utility switches, and expression controls. View full screenshot

Good to know

Built around
your real setup.

Tone Ninja is in active development. Feature scope and compatibility will be refined as testing continues.

When can I try it?

Tone Ninja is not yet available on the App Store. If you’d like to ask about testing it, get in touch and choose “Tone Ninja beta interest.”

Which devices is it being built for?

iOS is the first release target, with layouts designed for iPhone and iPad. Additional platform availability has not been announced.

Will it work with my Katana?

Compatibility depends on your amp model, generation, firmware, and connection. Supported hardware workflows use a compatible BLE MIDI bridge; direct USB MIDI support depends on the device and amp. Specific compatibility will be documented as testing progresses.

Can I use my existing patch files?

Compatible BOSS Tone Studio .tsl import and export are part of the workflow. A patch’s effects and settings need to be supported by the target amp; different Katana generations are not interchangeable.

Is this an official BOSS app?

No. Tone Ninja is an independent product developed by ESG Ventures LLC. It is not affiliated with or endorsed by Roland Corporation, BOSS, BOSS Tone Exchange, or Guitar-Tones.com.

Let’s talk tone

Your next sound starts here.

Beta interest, a setup question, or something you’d love to see? We’d like to hear it.

Get in touch