# 공감 vs rozeta

The clearest difference is in-app purchases: 공감 at none against rozeta's 7. 공감 also leads on ads (none vs shown) and update cadence (daily vs every 5 days). rozeta's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price there is nothing between them.

Both are free to download. rozeta sells 7 in-app purchases, starting at $6.99 per month. 공감 asks for nothing beyond the download.

공감 ships an update daily, rozeta every 5 days. The most recent releases landed on October 5, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 공감 | rozeta |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 5 days |
| Monetization | — | Free with in-app purchases |
| Size | 251 MB | 73 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seoyeon Kim](https://appshunter.io/developer/1608165805) | [Yujin Cha](https://appshunter.io/developer/1886519940) |

## What reviewers say

### 공감

[App page](https://appshunter.io/ios/app/2/id6478134499)

**Features:** macOS Compatibility

**In-app purchases:** none


### rozeta

[App page](https://appshunter.io/ios/app/rozeta-ai-lecture-notes/id6760845546)

This AI-powered study tool helps university students make the most of recorded lectures. It synchronizes audio with slides, provides accurate transcripts and AI-generated study content, and offers lecture translation for non-native speakers.

**Highlights:** Slide-synced lecture recording, High-quality lecture subtitles and scripts, AI-generated study content reflecting professor's points, Lecture translation for English and other languages, Organized lecture review by slide

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Plan | $6.99 | per month |
| Standard Plan | $9.99 | per month |
| Premium Plan | $14.99 | per month |
| Max 2× | $22.99 | per month |
| AI credits 500 | $0.99 | one-time |
| credits-2000 | $2.99 | one-time |
| credits-5000 | $6.99 | one-time |


## Frequently asked questions

### Is 공감 free?

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

### Is rozeta free?

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

### Do 공감 or rozeta have ads?

rozeta shows ads; 공감 does not.

### Which is updated more often, 공감 or rozeta?

공감 ships an update daily, and rozeta every 5 days. Most recently, 공감 was updated on October 5, 2026 and rozeta on October 25, 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.*