# GP Tone Builder vs Maestrom

The clearest difference is update cadence: Maestrom at weekly against GP Tone Builder's every 3 weeks. On price, ads, in-app purchases 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 and Maestrom sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

GP Tone Builder ships an update every 3 weeks, Maestrom weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | GP Tone Builder | Maestrom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/gp-tone-builder/id6760564651/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Freemium | — |
| Size | 16 MB | 49 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [aziz bou harb](https://appshunter.io/developer/1885005681) | [Sistem Robotik Yazilim Hizmetleri LTD](https://appshunter.io/developer/1490891402) |

## What reviewers say

### 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 |


### Maestrom

[App page](https://appshunter.io/ios/app/maestrom/id6773753713)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Maestrom Pro (Monthly) | $6.99 | per month |
| Maestrom Pro (Annual) | $39.99 | per year |
| Turkish Pop Chart Pack | $2.99 | one-time |


## Frequently asked questions

### Is GP Tone Builder free?

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

### Is Maestrom free?

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

### Do GP Tone Builder or Maestrom have ads?

Neither GP Tone Builder nor Maestrom shows ads.

### Which is updated more often, GP Tone Builder or Maestrom?

GP Tone Builder ships an update every 3 weeks, and Maestrom weekly. Most recently, GP Tone Builder was updated on November 5, 2026 and Maestrom on October 31, 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.*