# Windtone by Sonofield vs StagePlot & Tech Rider

The clearest difference is in-app purchases: Windtone by Sonofield at none against StagePlot & Tech Rider's 1. Windtone by Sonofield also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. StagePlot & Tech Rider sells 1 one-off in-app purchase. Windtone by Sonofield asks for nothing beyond the download.

Windtone by Sonofield ships an update every 5 days, StagePlot & Tech Rider every 3 days. The most recent releases landed on November 5, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Windtone by Sonofield | StagePlot & Tech Rider |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (21 ratings)](https://appshunter.io/ios/app/windtone-by-sonofield/id6772116401/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Monetization | Free | — |
| Size | 29 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sonofield Ear Trainer Education Ltd.](https://appshunter.io/developer/1789801335) | [Seungmin Hong](https://appshunter.io/developer/6818390367) |

## What reviewers say

### Windtone by Sonofield

[App page](https://appshunter.io/ios/app/windtone-by-sonofield/id6772116401)

This app offers a meditative ear training experience for musicians. It generates endless wind-chime melodies based on chosen scales, with adjustable complexity and real-time note labels. Enjoy a relaxing practice environment with natural ambiences and a tonic reference.

**Highlights:** Scale degree recognition, Over 30 preset scales, Real-time note labels, Adjustable melodic complexity, Natural background ambiences, Tonic reference chime, Playable chimes

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

**In-app purchases:** none


### StagePlot & Tech Rider

[App page](https://appshunter.io/ios/app/stageplot-and-tech-rider/id6826175186)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 테크라이더 프로 | $1.99 | one-time |


## Frequently asked questions

### Is Windtone by Sonofield free?

Windtone by Sonofield is free to download, with no in-app purchases.

### Is StagePlot & Tech Rider free?

StagePlot & Tech Rider is free to download, with in-app purchases available.

### Do Windtone by Sonofield or StagePlot & Tech Rider have ads?

Neither Windtone by Sonofield nor StagePlot & Tech Rider shows ads.

### Which is updated more often, Windtone by Sonofield or StagePlot & Tech Rider?

Windtone by Sonofield ships an update every 5 days, and StagePlot & Tech Rider every 3 days. Most recently, Windtone by Sonofield was updated on November 5, 2026 and StagePlot & Tech Rider on November 13, 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.*