# 갑자기말되는영어 문법세상 vs KxCoding

The clearest difference is price: KxCoding at Free against 갑자기말되는영어 문법세상's $0.99. 갑자기말되는영어 문법세상's advantage is in-app purchases (none vs 8) and update cadence (fortnightly vs every 3 months). On ads and device support there is nothing between them.

KxCoding is free to download; 갑자기말되는영어 문법세상 costs $0.99 up front. KxCoding sells 8 in-app purchases, starting at $49.99 per month. 갑자기말되는영어 문법세상 asks for nothing beyond the download.

갑자기말되는영어 문법세상 ships an update fortnightly, KxCoding every 3 months. The most recent releases landed on October 23, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 갑자기말되는영어 문법세상 | KxCoding |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[3.0 (9 ratings)](https://appshunter.io/ios/app/id447783470/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 77.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Paid | — |
| Size | 50 MB | 47 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [ENSAPIA Corporation](https://appshunter.io/developer/429863543) | [Keun young Kim](https://appshunter.io/developer/500486394) |

## What reviewers say

### 갑자기말되는영어 문법세상

[App page](https://appshunter.io/ios/app/id447783470)

This app focuses on building English grammar skills through sentence construction rather than rote memorization. It uses image-based prompts and chunking to help users naturally form sentences, improving their overall English fluency. Designed for quick, daily practice, it covers essential middle and high school grammar points.

**Highlights:** Sentence construction practice, Image-based prompts, Chunking method, Covers middle/high school grammar, Bookmark function, Difficulty adjustment

**Features:** Vision Pro support

**In-app purchases:** none


### KxCoding

[App page](https://appshunter.io/ios/app/kxcoding-learn-swift-and-ios/id1343183265)

**Features:** Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Pass 30일 구독 | $49.99 | per month |
| Days (D-Day 앱) | $19.99 | one-time |
| Essential Unit Test | $19.99 | one-time |
| Essential Swift Macro | $19.99 | one-time |
| Essential Auto Layout | $19.99 | one-time |
| Memo 앱 만들기 | $49.99 | one-time |
| Shiny Day (날씨 앱) | $49.99 | one-time |
| Apple 시계 앱 클론 코딩 | $59.99 | one-time |


## Frequently asked questions

### Is 갑자기말되는영어 문법세상 free?

갑자기말되는영어 문법세상 costs $0.99, with no in-app purchases.

### Is KxCoding free?

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

### Do 갑자기말되는영어 문법세상 or KxCoding have ads?

Neither 갑자기말되는영어 문법세상 nor KxCoding shows ads.

### Which is updated more often, 갑자기말되는영어 문법세상 or KxCoding?

갑자기말되는영어 문법세상 ships an update fortnightly, and KxCoding every 3 months. Most recently, 갑자기말되는영어 문법세상 was updated on October 23, 2026 and KxCoding on October 7, 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.*