Katana Librarian

Katana Librarian

by 1000452063 ONTARIO INC.

51 ratings
34 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • April 22, 2022
  • June 16, 2026

Features

Katana Librarian screenshot #1 for iPhone
Katana Librarian screenshot #2 for iPhone
Katana Librarian screenshot #3 for iPhone
iphone
ipad
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About

Unlock the full potential of your BOSS Katana amplifier with this app. Connect via Bluetooth to manage, edit, and organize your amp's patches. Access advanced features and control your sound like never before.

Download patches from amplifier
Modify patch parameters and effects
Organize patches into groups and set lists
Import/export TSL files
Emulate GA-FC pedal functionality
Hands-free patch switching with foot switch
Access undocumented Katana features
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What's New in Katana Librarian

5.7.1

June 16, 2026

Added patch sorting to the Library

1

In-App Purchases

$14.99

Unlock All Features

Unlock all Katana Librarian features

User reviews

Download tsl files.

I got this app a couple years ago. It was working fine, I loved it. Lately, I can not download tsl files anymore. Can you please help me out?

Just a bit limited

All the patches are great, but a bit limited. Maybe a few rhythm patches would be great. Keith Richards, Stone Roses, and some C & W, Chet Atkins, and Buddy Holly, for variety.

Boss Katana Ktn210b support?

Love the app.. any chance of bass katana combos?

Soooo Unreliable

I just got this thinking I wouldn’t have to lug around a laptop for changing my patches but soon discovered it constantly hangs and has to be restarted at least if you are doing imports and exports like me. I’m on a new iPad BTW connecting to a MKII 100. It sure would be nice if it only worked!!

Great Idea, Poor Execution

The concept behind Katana Librarian is excellent – a streamlined, intuitive way to manage Boss Katana patches without relying on Boss Tone Studio. Unfortunately, the execution leaves a lot to be desired.

I’m using a Boss Katana Gen 3 50W and an iPhone 15 Pro Max, so hardware is definitely not the issue. Yet the app is highly unstable, crashing almost every time I try to make any edit. This makes it incredibly frustrating and unreliable, especially when quick adjustments are needed.

Considering the app costs $14.99, you’d expect a far more polished and stable product. As it stands, it feels more like an unstable beta than a finished app. With some serious updates and bug fixes, this could be a fantastic tool for Katana users – but right now, it’s hard to recommend.
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FAQ

What does the Katana Librarian app do?

The Katana Librarian app allows you to connect your BOSS Katana amplifier to your phone or tablet via a Bluetooth adapter. It enables you to download, edit, and organize your amp's patches, manage effect parameters, and even emulate the functionality of a GA-FC pedal.

What are the key features of the Katana Librarian app?

Key features include downloading patches from your amp, modifying all patch parameters and effects, organizing patches into groups and set lists, importing/exporting TSL files, emulating GA-FC pedal functionality, and accessing undocumented Katana features.

How much does the Katana Librarian app cost?

The app offers a free version that allows you to test your connection and load demo patches. A one-time in-app purchase is available to unlock the full feature set, providing access to all advanced management and editing capabilities.

What are the compatibility requirements for the Katana Librarian app?

You need an iPhone or iPad running iOS/iPadOS 15.0 or later, a supported Bluetooth adapter (sold separately), and one of the listed compatible BOSS Katana amplifiers (various models from MkI, MkII, Gen3, and GO are supported).

Can I use this app for live performances?

Yes, the app is designed to be useful for live performances. You can organize your patches into set lists and use the hotkey feature in combination with a MIDI or HID foot switch for hands-free patch and effect switching during a show.