# UBL vs K

The clearest difference is ads: UBL at none against K's shown. UBL also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UBL ships an update weekly, K every 8 days. The most recent releases landed on September 25, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | UBL | K |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/k-word-master/id6745445370/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 8 days |
| Monetization | — | Ad-supported |
| Size | 153 MB | 36 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [NSdevil](https://appshunter.io/developer/372526203) | [Hyungpil Kim](https://appshunter.io/developer/1566963196) |

## What reviewers say

### UBL

[App page](https://appshunter.io/ios/app/ubl-cloud/id6449698673)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 UBL free?

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

### Is K free?

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

### Do UBL or K have ads?

K shows ads; UBL does not.

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

UBL ships an update weekly, and K every 8 days. Most recently, UBL was updated on September 25, 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.*