# K vs 코스모스 트랜스퍼

The clearest difference is in-app purchases: 코스모스 트랜스퍼 at none against K's 1. 코스모스 트랜스퍼 also leads on update cadence (every 11 days vs every 6 weeks). On price, review sentiment, ads 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. 코스모스 트랜스퍼 asks for nothing beyond the download.

K ships an update every 6 weeks, 코스모스 트랜스퍼 every 11 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | K | 코스모스 트랜스퍼 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 11 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 216 MB | 32 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Siwonschool](https://appshunter.io/developer/473647838) | [Ubion](https://appshunter.io/developer/424208544) |

## 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 |


### 코스모스 트랜스퍼

[App page](https://appshunter.io/ios/app/id6802564600)

This app facilitates natural, real-time conversations between two people speaking different languages. It displays subtitles in each person's language on their respective sides of the screen and offers an audio playback option for spoken translations. It's ideal for institutions needing to communicate with foreign language speakers.

**Highlights:** Real-time two-way translation, Subtitles with 180-degree screen rotation, Audio playback for translated sentences, Conversation via separate phones using QR codes, Save conversation history, Supports multiple languages, Customizable subtitle size and layout

**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 코스모스 트랜스퍼 free?

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

### Do K or 코스모스 트랜스퍼 have ads?

Neither K nor 코스모스 트랜스퍼 shows ads.

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

K ships an update every 6 weeks, and 코스모스 트랜스퍼 every 11 days. Most recently, K was updated on November 7, 2026 and 코스모스 트랜스퍼 on October 31, 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.*