# BTS for GX vs SonoSpec

The clearest difference is price: BTS for GX at Free against SonoSpec's $9.99. BTS for GX also leads on iOS requirement (11.0 vs 17.0). SonoSpec's advantage is update cadence (every 2 months vs every 8 months). On ads, in-app purchases and device support there is nothing between them.

BTS for GX is free to download; SonoSpec costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

BTS for GX ships an update every 8 months, SonoSpec every 2 months. The most recent releases landed on November 4, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | BTS for GX | SonoSpec |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[2.5 (4 ratings)](https://appshunter.io/ios/app/bts-for-gx-10/id6504162234/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 23 MB | 1 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) | [Corey Thomas Slick](https://appshunter.io/developer/1818871667) |

## What reviewers say

### BTS for GX

[App page](https://appshunter.io/ios/app/bts-for-gx-10/id6504162234)

This app allows you to connect your BOSS GX-10 device to your iPhone or iPad via Bluetooth. It offers functions for downloading new tones, editing existing ones, and managing your tone library. Access additional free content through the BOSS TONE EXCHANGE website.

**Highlights:** Bluetooth connectivity, Tone editing, Tone librarian, Download additional tones, Access BOSS TONE EXCHANGE

**Features:** macOS Compatibility

**In-app purchases:** none


### SonoSpec

[App page](https://appshunter.io/ios/app/sonospec-spectrum-analyzer/id6804465268)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BTS for GX free?

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

### Is SonoSpec free?

SonoSpec costs $9.99, with no in-app purchases.

### Do BTS for GX or SonoSpec have ads?

Neither BTS for GX nor SonoSpec shows ads.

### Which is updated more often, BTS for GX or SonoSpec?

BTS for GX ships an update every 8 months, and SonoSpec every 2 months. Most recently, BTS for GX was updated on November 4, 2026 and SonoSpec on November 8, 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.*