
Tone Ninja
Editor for BOSS Katana amps
2 ratings
Free
In-App Purchases
Rating summary
About
Tone Ninja is a modern editor and librarian for BOSS Katana amps on iPhone, iPad and Mac. It works with Katana Gen 3, MkII, MkI and Katana:GO.
THREE WAYS TO EDIT
Shape: adjust a tone by ear. Pick a part of the sound (drive, tone, motion, space, output) and nudge it: less mud, brighter, tighter low end.
Sound: the same five parts, with the controls that shape each one. Drag delay and reverb on a map of time and level.
Classic: every block and setting, laid out like the amp's own panel.
Turn on Hear on Amp to hear each change as you make it. Save versions as you go, and write a finished tone to one of your amp's channels.
YOUR TONE LIBRARY
Keep every tone in one place, even when no amp is connected. Import Tone Studio Live Set files (.tsl) and backups, or browse BOSS Tone Exchange and Guitar-Tones inside the app and import tones directly. Group tones into Song Packs, build Gig Packs in set order, and keep Live Sets for the amp. Starter tones for every Katana model are included.
AUTOMATED TONE GENERATION
Describe a sound, like "warm blues clean" or "tight modern rhythm", and get a tone built for your exact Katana. Basic includes 5 free generations.
TONE NINJA PLUS
- Your Library, packs and sets backed up to the cloud and synced across every device
- Convert tones to older Katana models and Katana:GO
- A monthly allowance of Automated Tone Generation
Plus is an auto-renewing subscription, monthly or yearly. Payment is charged to your Apple Account when you confirm the purchase. The subscription renews automatically unless it is canceled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the period ends. Manage or cancel it in your App Store account settings.
WHAT YOU NEED
To control an amp from iPhone or iPad, connect over Bluetooth:
- Katana:GO: Bluetooth is built in.
- Katana Gen 3: a BOSS BT-DUAL or an XSONIC AIRSTEP Kat EX.
- Katana MkI and MkII: a USB-to-Bluetooth bridge, such as the AIRSTEP Kat Edition or CME WIDI Uhost.
On a Mac with Apple silicon, you can also connect with a USB cable.
The Library and the Editor work without an amp.
Terms of Use: https://toneninja.app/terms
Privacy Policy: https://toneninja.app/privacy
Support: support@toneninja.com
BOSS and KATANA are trademarks of Roland Corporation. Tone Ninja is an independent app and is not affiliated with, endorsed by, or sponsored by Roland or BOSS.
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What's New in Tone Ninja
1.0.0
October 28, 2026
2
Subscriptions & In-App Purchases
Tone Ninja Plus Monthly
Tone Ninja, even better.
$4.991 Month



