# K vs K

The clearest difference is in-app purchases: K at none against K's 1. K also leads on update cadence (every 8 days vs every 6 weeks). K's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price and device support there is nothing between them.

Both are free to download. K sells 1 in-app purchase, starting at $5.99 per month. K asks for nothing beyond the download.

K ships an update every 6 weeks, K every 8 days. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | K | K |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/k-word-master/id6745445370/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 117 MB | 36 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Siwonschool](https://appshunter.io/developer/473647838) | [Hyungpil Kim](https://appshunter.io/developer/1566963196) |

## What reviewers say

### K

[App page](https://appshunter.io/ios/app/k-readingbook/id6469670688)

This app uses AI to assess Korean language and TOPIK exam readiness, providing personalized reading materials to boost vocabulary and comprehension. It offers practice tests and evaluations to track progress and improve Korean proficiency.

**Highlights:** AI-driven Korean language assessment, Customized reading material recommendations, TOPIK level 1-6 vocabulary focus, Diverse reading materials (literature to modern culture), TOPIK-style level tests and evaluations, Real-time Korean level and skill tracking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One month | $5.99 | per month |


### K

[App page](https://appshunter.io/ios/app/k-word-master/id6745445370)

Learn and practice Korean vocabulary through engaging quizzes. Track your learning progress and advance your language skills with this educational tool. Designed for all levels of Korean learners.

**Highlights:** Korean vocabulary quizzes, Progress tracking, Skill leveling, Practice Korean words, Educational tool

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

**In-app purchases:** none


## Frequently asked questions

### Is K free?

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

### Is K free?

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

### Do K or K have ads?

K shows ads; K does not.

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

K ships an update every 6 weeks, and K every 8 days. Most recently, K was updated on October 15, 2026 and K on October 2, 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.*