# BTS for KATANA vs Extrack

The clearest difference is rating: Extrack at 3.8 against BTS for KATANA's 3.1. Extrack also leads on review sentiment (37% vs 28%). BTS for KATANA's advantage is in-app purchases (none vs 2) and iOS requirement (11.0 vs 17.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Extrack sells 2 in-app purchases, starting at $5.99 per month. BTS for KATANA asks for nothing beyond the download.

Extrack holds the better App Store score, 3.8 against 3.1. Both are backed by a comparable volume of ratings — 21 and 24 respectively. Written reviews point the same way: 28% of BTS for KATANA's written reviews are positive against 37% of Extrack's.

BTS for KATANA ships an update every 2 months, Extrack every 6 weeks. The most recent releases landed on September 3, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | BTS for KATANA | Extrack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (21 ratings)](https://appshunter.io/ios/app/bts-for-katanago/id6469464648/reviews) | **[3.8 (24 ratings)](https://appshunter.io/ios/app/extrack-stem-separatorchord/id6504546276/reviews)** |
| Number of ratings | 21 | **24** |
| Positive reviews | 27.8% of reviews | **36.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | **Free** | Freemium |
| Size | 26 MB | 604 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Roland Corporation](https://appshunter.io/developer/387333694) | [Yamaha Corporation](https://appshunter.io/developer/353469356) |

## What reviewers say

### BTS for KATANA

[App page](https://appshunter.io/ios/app/bts-for-katanago/id6469464648)

Connect your BOSS KATANA:GO amplifier to your iOS device to edit tones, manage your sound library, and access a global community of guitarists. Share your own custom sounds and download presets created by others worldwide.

**Highlights:** Bluetooth connectivity, Tone editing, Tone librarian, Session function, Access BOSS TONE EXCHANGE, Share and download Livesets

**In-app purchases:** none


### Extrack

[App page](https://appshunter.io/ios/app/extrack-stem-separatorchord/id6504546276)

Instantly split songs into individual instrument parts and analyze chords in real-time. Adjust volumes, practice "minus one" style, and visualize chord fingerings for guitar or piano. Perfect for musicians of all levels looking to jam along with their favorite tracks.

**Highlights:** Instrumental stem separation, Real-time chord analysis, Adjustable instrument volumes, Practice 'minus one' mode, Visual chord fingering guides, Tempo and key adjustment, Section looping

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $5.99 | per month |
| Yearly Plan | $39.99 | per year |


## Frequently asked questions

### Is BTS for KATANA free?

BTS for KATANA is free to download, with no in-app purchases.

### Is Extrack free?

Extrack is free to download, with in-app purchases available.

### Which has better reviews, BTS for KATANA or Extrack?

Extrack is rated higher. BTS for KATANA averages 3.1 out of 5 from 21 ratings, while Extrack averages 3.8 from 24 ratings.

### Do BTS for KATANA or Extrack have ads?

Neither BTS for KATANA nor Extrack shows ads.

### Which is updated more often, BTS for KATANA or Extrack?

BTS for KATANA ships an update every 2 months, and Extrack every 6 weeks. Most recently, BTS for KATANA was updated on September 3, 2026 and Extrack on September 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*