# 어휘역 vs K

The clearest difference is in-app purchases: K at none against 어휘역's 7. K also leads on update cadence (every 2 days vs weekly). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. 어휘역 sells 7 in-app purchases, starting at $1.99 per month. K asks for nothing beyond the download.

어휘역 ships an update weekly, K every 2 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | 어휘역 | K |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/id6476744942/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 88.5% of reviews | **88.9% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | **Free** | Ad-supported |
| Size | 108 MB | 35 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sunghee Lee](https://appshunter.io/developer/1477689060) | [JAEMIN LEE](https://appshunter.io/developer/1894477300) |

## What reviewers say

### 어휘역

[App page](https://appshunter.io/ios/app/id6476744942)

This game helps you recall and strengthen your vocabulary by guessing words. It challenges you to think of related nouns and provides a "relatedness score" to guide your guesses, making learning fun for all ages.

**Highlights:** Word guessing gameplay, Relatedness score for hints, Focus on nouns, Vocabulary expansion, Language comprehension improvement, Stimulates imagination and creativity

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 광고 제거 (1개월) | $1.99 | per month |
| 광고 제거 (1년) | $17.99 | per year |
| 어휘역 직행 티켓 | $0.49 | one-time |
| 어휘역 직행 티켓 | $1.99 | one-time |
| 어휘역 직행 티켓 | $2.99 | one-time |
| 어휘역 직행 티켓 | $4.99 | one-time |
| 어휘역 직행 티켓 | $6.99 | one-time |


### K

[App page](https://appshunter.io/ios/app/k-jihacheol/id6789366747)

Learn subway station names through fun quizzes. Master Korean and international subway lines, improving your typing speed and memorization skills. Perfect for commuters, travelers, and language learners.

**Highlights:** Two game modes: Typing and Memorization, Learn Korean and international subway lines, Improve typing speed and accuracy, Track progress and achievements, Explore subway maps, Practice foreign language vocabulary

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

**In-app purchases:** none


## Frequently asked questions

### Is 어휘역 free?

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

### Is K free?

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

### Do 어휘역 or K have ads?

Both 어휘역 and K show ads.

### Which is updated more often, 어휘역 or K?

어휘역 ships an update weekly, and K every 2 days. Most recently, 어휘역 was updated on October 28, 2026 and K on October 28, 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.*