1. Home
  2. 🎵 Music
  3. Katana Librarian
Katana Librarian

Katana Librarian

by 1000452063 ONTARIO INC.

52 ratings
41 reviews
📊 Productivity
🎵 Music
Free
In-App Purchases

Details

Released
April 22, 2022
Updated
November 2, 2026

Features

Developer

1000452063 ONTARIO INC.
✨Promote your app ✨
Katana Librarian screenshot #1 for iPhone
Katana Librarian screenshot #2 for iPhone
Katana Librarian screenshot #3 for iPhone
iphone
ipad
🧾$15.95
In-App Purchase↘︎
📌Ready
Reviews summary↘︎
⭐41
Reviews↘︎
📝11+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓8 answered
FAQ↘︎
📦~ in 3 weeks
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

Unlock the full potential of your BOSS Katana amplifier by connecting wirelessly via Bluetooth. Manage, edit, and organize your amp's patches, effects, and settings. Access advanced features and emulate pedal functionality for a seamless playing experience.

✓Download and manage amp patches
✓Edit patch parameters and effects
✓Organize patches into groups and setlists
✓Import/export TSL files
✓Emulate GA-FC pedal functionality
✓Access undocumented amp features
✓Hands-free switching with MIDI/HID footswitch
Show original description

What users say about Katana Librarian

Reviews of Katana Librarian are mixed: the Music app is rated 4.1/5 from 52 App Store ratings. What users like most: great app for managing patches, useful for editing on the go. Top complaints: unreliable and crashes often, freezes on library page. Summarized from real user reviews.

Positive things

  • 👍Great app for managing patches
  • 💡Useful for editing on the go
  • 🚀Fast and smooth operation (when working)
  • 👍Intuitive UI and options
  • 💡Opens up amp potential
  • 👍Great for blind guitarists (VoiceOver)
  • 👍Better than Boss Tone Studio
  • 💡Saves patches directly to library
  • 👍Works with Airstep footswitch
  • 👍Good value for money

Negative things

  • 🐛Unreliable and crashes often
  • 🐛Freezes on library page
  • 🐛Cannot connect to amp
  • 🐛Cannot download tsl files
  • 🐛Limited patch variety
  • 🐛Constantly hangs and needs restart
  • 🐛Expensive for instability
  • 🐛Not working with Gen 3 Katana
  • 🐛No USB connection, requires Bluetooth adapter
  • 🐛Slow patch changes via USB
  • 🐛Cannot return to librarian via Bluetooth
  • 🐛Unable to restore purchase
  • 🐛Issues with iOS 17 Bluetooth disconnects
  • 🐛Cannot use via cable (Lightning to USB)
  • 🐛Problematic last update (disconnects)
  • 🐛Cannot upgrade in-app
  • 🐛Doesn't work with older iPhones
  • 🐛Doesn't save pedal settings
  • 🐛Connectivity issues with CME Widi uhost
  • 🐛Cannot access iPad Pro with USB C adapter
See all reviews
+2

What's New in Katana Librarian

5.8.2

November 2, 2026

Add support for USB Audio settings

1

Subscriptions & In-App Purchases

$15.95

Unlock All Features

Unlock all Katana Librarian features

User reviews

Most RecentHighest RatedLowest Rated

Stopped working

I have just emailed to report that the app has stopped working after the recent iPad iOS update.
It now opens on the library page, but freezes when you try to access anything or attempt to connect to the amp.
Please advise on what to do as I can’t even backup my saved tones.
Up to this point the app has been very useful, but now it’s worthless until an update or fix happens.

Update - 23 Sept.
The support team replied and acted on the information supplied. Now after the latest update the App is working again with full access to tones and editing.
Thanks SA
Show more
SStevieasp

Stopped working

I have just emailed to report that the app has stopped working after the recent iPad iOS update.
It now opens on the library page, but freezes when you try to access anything or attempt to connect to the amp.
Please advise on what to do as I can’t even backup my saved tones.
Up to this point the app has been very useful, but now it’s worthless until an update or fix happens.
Show more
SStevieasp

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?
FFrasden

Response from developer

If you are still having issues please contact us at apps4amps@gmail.com

Katana Go again on the Market

As the Katana Go is now back in the market it would be great to add it the the Librarian App. Any plans in your development?
I got the great news today that now Katana Go is supported by the app. Thanks to the team! You are great!
Vvollanzan

Response from developer

The KATANA:GO is now supported.

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.
FFilshine

Response from developer

Lots of patches available for download here: https://www.facebook.com/groups/Katanapatchcentral

See 36 more reviews

User experience

🐞

Reported Bugs

18 issues

App stops working after iOS update

Bug

App freezes when accessing content or connecting to amp

Bug

Cannot download tsl files

Bug

App constantly hangs and needs restarting

Bug

App is highly unstable, crashing frequently

Bug

Cannot change patch from within a group

Bug

Slow to change patches on USB connection

Bug

Cannot return to librarian when using Bluetooth connection

Bug

Unable to restore purchase/license

Bug

No USB connection, requires Bluetooth adapter purchase

Bug

Disconnects Bluetooth permanently while using Airstep (iOS 17)

Bug

Cannot use via cable (Lightning to USB)

Bug

Last update problematic, disconnects amp and Bluetooth

Bug

Cannot upgrade in-app

Bug

Doesn't work with older iPhones 8 and earlier

Bug

Doesn't save pedal settings

Bug

Not connecting with CME Widi uhost

Bug

Cannot access iPad Pro with USB C adapter

Bug
✨

Requested Features

10 requests

Support for Katana Go

Feature

Support for Bass Katana combos (KTN210B)

Feature

More rhythm patches and genre variety

Feature

Support for new devices (Bass, Go)

Feature

Improve VoiceOver compatibility

Feature

Add Katana Go to Librarian App

Feature

Support for Bass Katana amps (110 or 210)

Feature

More cleanly organize patches

Feature

Edit patches without amp connected

Feature

Dark mode option

Feature

FAQ

What BOSS Katana amplifiers are compatible with Katana Librarian?

Katana Librarian supports a wide range of BOSS Katana amplifiers, including models from the 50, 100, and Artist series across MkI, MkII, Gen3, and GO versions. It also works with the KATANA-HEAD and KATANA-HEAD MkII models.

Does Katana Librarian require a Bluetooth adapter?

Yes, a supported Bluetooth adapter is required to connect your iPhone or iPad to your BOSS Katana amplifier. The app lists specific supported adapters for different amplifier generations.

What features are available in the free version of Katana Librarian?

The free version allows you to test your Bluetooth connection and load the built-in demo patches. To unlock the full feature set, a one-time in-app purchase is necessary.

Can I organize my guitar patches with Katana Librarian?

Yes, you can organize your patches into groups, tag your favorites, and create setlists for live performances. This helps in managing your sound library efficiently.

Does Katana Librarian have ads?

No, Katana Librarian does not contain advertisements. The app is free to download and offers a one-time in-app purchase to unlock its full functionality.

What is the update frequency for Katana Librarian?

The app was last updated on November 2, 2026, indicating recent development. Users can expect ongoing support and potential new features or bug fixes based on this update schedule.

How does Katana Librarian compare to BOSS Tone Studio?

User reviews suggest that Katana Librarian is considered by some to be better than BOSS Tone Studio, offering an intuitive UI and smooth operation when functioning correctly. It aims to open up the full potential of the amplifier.

Is Katana Librarian suitable for users with visual impairments?

Yes, Katana Librarian is noted as being great for blind guitarists, specifically mentioning its compatibility with VoiceOver. This accessibility feature allows for easier navigation and control of the app's functions.