# JAM BUDDY II vs GP Tone Builder

The clearest difference is in-app purchases: JAM BUDDY II at none against GP Tone Builder's 1. JAM BUDDY II also leads on iOS requirement (12.0 vs 15.0). GP Tone Builder's advantage is update cadence (every 3 weeks vs every 12 months). On price, ads and device support there is nothing between them.

Both are free to download. GP Tone Builder sells 1 in-app purchase, starting at $29.99 per year. JAM BUDDY II asks for nothing beyond the download.

JAM BUDDY II ships an update every 12 months, GP Tone Builder every 3 weeks. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | JAM BUDDY II | GP Tone Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/gp-tone-builder/id6760564651/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 28 MB | 16 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Changsha Melofty Audio Technology Co., Ltd.](https://appshunter.io/developer/1752047040) | [aziz bou harb](https://appshunter.io/developer/1885005681) |

## What reviewers say

### JAM BUDDY II

[App page](https://appshunter.io/ios/app/jam-buddy-ii/id6504378648)

**Features:** macOS Compatibility

**In-app purchases:** none


### GP Tone Builder

[App page](https://appshunter.io/ios/app/gp-tone-builder/id6760564651)

This app uses AI to analyze the guitar or bass tone of any song and create playable patches for your Valeton multi-effects processor. It isolates tracks, analyzes spectral features, and maps tones to your device's effects via Bluetooth.

**Highlights:** AI tone analysis for guitar and bass, Bluetooth patch transfer, Song audio separation, Multi-section tone mapping, Direct hardware integration

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $29.99 | per year |


## Frequently asked questions

### Is JAM BUDDY II free?

JAM BUDDY II is free to download, with no in-app purchases.

### Is GP Tone Builder free?

GP Tone Builder is free to download, with in-app purchases available.

### Do JAM BUDDY II or GP Tone Builder have ads?

Neither JAM BUDDY II nor GP Tone Builder shows ads.

### Which is updated more often, JAM BUDDY II or GP Tone Builder?

JAM BUDDY II ships an update every 12 months, and GP Tone Builder every 3 weeks. Most recently, JAM BUDDY II was updated on October 7, 2026 and GP Tone Builder on October 24, 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.*