# KORG cortosia vs Étude

The clearest difference is price: Étude at Free against KORG cortosia's $9.99. KORG cortosia's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 15.1). On ads and device support there is nothing between them.

Étude is free to download; KORG cortosia costs $9.99 up front. Étude sells 2 in-app purchases, starting at $14.99 per month. KORG cortosia asks for nothing beyond the download.

## The numbers

| Metric | KORG cortosia | Étude |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.2 (6 ratings)](https://appshunter.io/ios/app/korg-cortosia/id952982019/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 47.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Paid | — |
| Size | 35 MB | 43 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [KORG INC.](https://appshunter.io/developer/363714046) | [Gael Homere](https://appshunter.io/developer/6786710850) |

## What reviewers say

### KORG cortosia

[App page](https://appshunter.io/ios/app/korg-cortosia/id952982019)

This app helps musicians improve their sound quality by analyzing five key elements of performance in real-time. It provides instant feedback, tracks daily progress, and allows users to compare their skills globally. Ideal for beginners and intermediate players seeking to refine their technique.

**Highlights:** Real-time analysis of five 'good sound' elements, Instant scoring on a 100-point scale, Daily practice recording and progress tracking, Global ranking for 'good sound' competition, Supports multiple wind and string instruments, Model tone comparison

**In-app purchases:** none


### Étude

[App page](https://appshunter.io/ios/app/etude-piano-practice-tracker/id6804077005)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Étude Full, Monthly | $14.99 | per month |
| Étude Full, Yearly | $119.99 | per year |


## Frequently asked questions

### Is KORG cortosia free?

KORG cortosia costs $9.99, with no in-app purchases.

### Is Étude free?

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

### Do KORG cortosia or Étude have ads?

Neither KORG cortosia nor Étude shows ads.

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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.*