# Katana Librarian

> Music

Canonical page: [https://chrome-stats.com/d/id1616920240](https://chrome-stats.com/d/id1616920240)

## Overview

- **ID:** `id1616920240`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** 1000452063 ONTARIO INC.
- **Category:** Music
- **Rating:** 4.10 / 5 (52 ratings)
- **Version:** 5.7.2
- **Last updated:** 2026-09-22
- **First published:** 2022-04-22
- **Size:** 6.03 MB
- **Data as of:** 2026-09-25
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/katana-librarian/id1616920240)
- **Privacy policy:** [https://drive.google.com/file/d/1XffOKpQb0QuopIt0SDv8M5EyOAoNfdzi/view](https://drive.google.com/file/d/1XffOKpQb0QuopIt0SDv8M5EyOAoNfdzi/view)

## Description

Katana Librarian is a patch editor and librarian for BOSS Katana amplifiers. It connects from iPhone or iPad to your amp over Bluetooth, letting you load, edit, and organize patches directly from your mobile device. The app offers a free version for testing and an optional one-time in-app purchase to unlock the full feature set.

Upgrade unlocks include patch download and real-time parameter editing across all effect types, grouping and tagging for live sets, import/export of MkI, MkII, Gen3 and GO .TSL files, rename/delete operations, writing patches to amp channels, GA-FC pedal emulation, and hotkey control with MIDI/HID foot switches. It also exposes undocumented Katana features where supported. Requirements: iOS 15.0+ on iPhone/iPad with a supported Bluetooth adapter and one of the listed Katana models. Note: This app is not affiliated with or endorsed by Roland.

## Rankings

- #180,666 — Overall

## Review summary

Katana Librarian shines for mobile patch editing and direct library saving, with an intuitive UI and strong live workflow, often outperforming Boss Tone Studio. However, stability issues, hardware-connectivity hurdles, and device-feature gaps, plus concerns about value, temper its appeal. It’s a promising tool for Katana users that needs fixes and broader hardware support.

### Pros

- Laptop-free patch editing on iPad/iPhone (edit patches without carrying a laptop).
- Saves edits directly to the patch library, not just to amp channels (unlike Tone Studio).
- Intuitive, streamlined UI and strong patch-management concept.
- Excellent for live/gig use, enabling patch editing/control from across the room.

### Cons

- Frequent crashes and hangs when editing; stability is a major issue.
- Connectivity problems with hardware (e.g., CME Widi uhost) and reliance on external adapters (Bluetooth) to work.
- Incompatibility with older devices (e.g., iPhone 8 and earlier) and missing features on those devices.
- Feature gaps and bugs (can't change a patch within a group; patch organization could be improved; no bass Katana support yet).
- Perceived high price given current instability and limitations.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1616920240)