# 초견챌린지 vs OpenScore

The clearest difference is in-app purchases: 초견챌린지 at none against OpenScore's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OpenScore sells 3 in-app purchases, starting at $1.99 per month. 초견챌린지 asks for nothing beyond the download.

초견챌린지 ships an update every 2 days, OpenScore every 3 days. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | 초견챌린지 | OpenScore |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Size | 3 MB | 100 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [jungwook cho](https://appshunter.io/developer/6791017829) | [Nemo Studio (KR)](https://appshunter.io/developer/1845772843) |

## What reviewers say

### 초견챌린지

[App page](https://appshunter.io/ios/app/id6800208649)

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

**In-app purchases:** none


### OpenScore

[App page](https://appshunter.io/ios/app/openscore-sheet-music-reader/id6806447089)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $1.99 | per month |
| Pro | $12.99 | per year |
| Plus | $19.99 | one-time |


## Frequently asked questions

### Is 초견챌린지 free?

초견챌린지 is free to download, with no in-app purchases.

### Is OpenScore free?

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

### Do 초견챌린지 or OpenScore have ads?

Neither 초견챌린지 nor OpenScore shows ads.

### Which is updated more often, 초견챌린지 or OpenScore?

초견챌린지 ships an update every 2 days, and OpenScore every 3 days. Most recently, 초견챌린지 was updated on October 31, 2026 and OpenScore on November 1, 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.*