# 고요 GOYO vs Ballet Protractor

The clearest difference is in-app purchases: Ballet Protractor at none against 고요 GOYO's 2. Ballet Protractor also leads on update cadence (daily vs every 3 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 고요 GOYO sells 2 in-app purchases, starting at $2.99 per month. Ballet Protractor asks for nothing beyond the download.

고요 GOYO ships an update every 3 days, Ballet Protractor daily. The most recent releases landed on August 30, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 고요 GOYO | Ballet Protractor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 days | **Daily** |
| Size | 67 MB | 60 MB |
| Requires iOS | 16.6 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seungrae Cho](https://appshunter.io/developer/1620778100) | [Jungmun Choi](https://appshunter.io/developer/1877873773) |

## What reviewers say

### 고요 GOYO

[App page](https://appshunter.io/ios/app/goyo/id6753145513)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 고요 월 구독권 | $2.99 | per month |
| 고요 연간 구독 | $29.99 | per year |


### Ballet Protractor

[App page](https://appshunter.io/ios/app/ballet-protractor-leg-angle/id6782101611)

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

**In-app purchases:** none


## Frequently asked questions

### Is 고요 GOYO free?

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

### Is Ballet Protractor free?

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

### Do 고요 GOYO or Ballet Protractor have ads?

Both 고요 GOYO and Ballet Protractor show ads.

### Which is updated more often, 고요 GOYO or Ballet Protractor?

고요 GOYO ships an update every 3 days, and Ballet Protractor daily. Most recently, 고요 GOYO was updated on August 30, 2026 and Ballet Protractor on September 20, 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.*