# 유하다요 vs TddStudy

The clearest difference is in-app purchases: TddStudy at none against 유하다요's 3. 유하다요's advantage is iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 유하다요 sells 3 one-off in-app purchases. TddStudy asks for nothing beyond the download.

유하다요 ships an update every 3 weeks, TddStudy every 2 weeks. The most recent releases landed on October 12, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | 유하다요 | TddStudy |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 53.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Size | 87 MB | 12 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yuha Jeon](https://appshunter.io/developer/1543300484) | [HYOJUNG KIM](https://appshunter.io/developer/1879759534) |

## What reviewers say

### 유하다요

[App page](https://appshunter.io/ios/app/id1543300482)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 한자 속공패스 | $119.99 | one-time |
| JLPT 집중패키지 | $199.99 | one-time |
| 드림패키지 | $229.99 | one-time |


### TddStudy

[App page](https://appshunter.io/ios/app/tddstudy/id6784594223)

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

**In-app purchases:** none


## Frequently asked questions

### Is 유하다요 free?

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

### Is TddStudy free?

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

### Do 유하다요 or TddStudy have ads?

Neither 유하다요 nor TddStudy shows ads.

### Which is updated more often, 유하다요 or TddStudy?

유하다요 ships an update every 3 weeks, and TddStudy every 2 weeks. Most recently, 유하다요 was updated on October 12, 2026 and TddStudy on September 29, 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.*