# 오늘 수업 vs Rata

The clearest difference is in-app purchases: 오늘 수업 at none against Rata's 2. 오늘 수업 also leads on ads (none vs shown) and iOS requirement (14.0 vs 16.4). On price, update cadence and device support there is nothing between them.

Both are free to download. Rata sells 2 in-app purchases, starting at $2.99 per month. 오늘 수업 asks for nothing beyond the download.

오늘 수업 ships an update weekly, Rata fortnightly. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 오늘 수업 | Rata |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Fortnightly |
| Size | 64 MB | 39 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Modamu](https://appshunter.io/developer/1612221862) | [Comeva Inc.](https://appshunter.io/developer/1755537877) |

## What reviewers say

### 오늘 수업

[App page](https://appshunter.io/ios/app/id6462989746)

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

**In-app purchases:** none


### Rata

[App page](https://appshunter.io/ios/app/rata-shared-calendar/id6511228689)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rata Premium Monthly | $2.99 | per month |
| Rata Premium Annual | $19.99 | per year |


## Frequently asked questions

### Is 오늘 수업 free?

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

### Is Rata free?

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

### Do 오늘 수업 or Rata have ads?

Rata shows ads; 오늘 수업 does not.

### Which is updated more often, 오늘 수업 or Rata?

오늘 수업 ships an update weekly, and Rata fortnightly. Most recently, 오늘 수업 was updated on October 30, 2026 and Rata on October 27, 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.*