# 과백이 vs Cathedra

The clearest difference is in-app purchases: 과백이 at none against Cathedra's 6. 과백이 also leads on update cadence (every 2 days vs every 5 days) and iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Cathedra sells 6 in-app purchases, starting at $3.99 per month. 과백이 asks for nothing beyond the download.

과백이 ships an update every 2 days, Cathedra every 5 days. The most recent releases landed on November 7, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 과백이 | Cathedra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 5 days |
| Size | 147 MB | 20 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Junsu Lee](https://appshunter.io/developer/1896502448) | [REMZI ATASAGUN POYRAZOGLU](https://appshunter.io/developer/6791637217) |

## What reviewers say

### 과백이

[App page](https://appshunter.io/ios/app/ai/id6767712580)

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

**In-app purchases:** none


### Cathedra

[App page](https://appshunter.io/ios/app/cathedra/id6802411051)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cathedra Plus | $3.99 | per month |
| Cathedra Pro | $11.99 | per month |
| Cathedra Max | $24.99 | per month |
| Cathedra Plus | $24.99 | per year |
| Cathedra Pro | $69.99 | per year |
| Cathedra Max | $149.99 | per year |


## Frequently asked questions

### Is 과백이 free?

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

### Is Cathedra free?

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

### Do 과백이 or Cathedra have ads?

Neither 과백이 nor Cathedra shows ads.

### Which is updated more often, 과백이 or Cathedra?

과백이 ships an update every 2 days, and Cathedra every 5 days. Most recently, 과백이 was updated on November 7, 2026 and Cathedra on November 6, 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.*