# 푸로그 vs Ballet Protractor

The clearest difference is in-app purchases: Ballet Protractor at none against 푸로그's 1. Ballet Protractor also leads on update cadence (daily vs every 9 days). 푸로그's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 푸로그 sells 1 in-app purchase, starting at $1.99 per month. Ballet Protractor asks for nothing beyond the download.

푸로그 ships an update every 9 days, Ballet Protractor daily. The most recent releases landed on September 10, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | 푸로그 | Ballet Protractor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Daily** |
| Size | 64 MB | 60 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [JongHyuk Kim](https://appshunter.io/developer/1625606050) | [Jungmun Choi](https://appshunter.io/developer/1877873773) |

## What reviewers say

### 푸로그

[App page](https://appshunter.io/ios/app/and/id6751427930)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Poolog Premium | $1.99 | per month |


### 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 푸로그 free?

푸로그 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 푸로그 or Ballet Protractor have ads?

Ballet Protractor shows ads; 푸로그 does not.

### Which is updated more often, 푸로그 or Ballet Protractor?

푸로그 ships an update every 9 days, and Ballet Protractor daily. Most recently, 푸로그 was updated on September 10, 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.*