# 갑자기말되는일본어 문법세상 vs Justdown

The clearest difference is price: Justdown at Free against 갑자기말되는일본어 문법세상's $0.99. Justdown also leads on update cadence (every 2 days vs fortnightly). 갑자기말되는일본어 문법세상's advantage is iOS requirement (9.0 vs 16.4). On ads, in-app purchases and device support there is nothing between them.

Justdown is free to download; 갑자기말되는일본어 문법세상 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

갑자기말되는일본어 문법세상 ships an update fortnightly, Justdown every 2 days. The most recent releases landed on October 30, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 갑자기말되는일본어 문법세상 | Justdown |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/id448573128/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 65.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Paid | — |
| Size | 81 MB | 31 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ENSAPIA Corporation](https://appshunter.io/developer/429863543) | [Hyungwon Jang](https://appshunter.io/developer/1879254690) |

## What reviewers say

### 갑자기말되는일본어 문법세상

[App page](https://appshunter.io/ios/app/id448573128)

This app focuses on building Japanese grammar skills through image association and chunk-based learning, rather than traditional grammar rules. It helps users construct sentences by thinking in chunks, transforming grammar knowledge into practical ability. With over 1600 sentences and a bookmark feature, it caters to all levels from beginner to advanced.

**Highlights:** Image-based learning for intuitive understanding, Chunk-based sentence construction, Transforms grammar knowledge into practical ability, Over 1600 sentences for all levels, Bookmark up to 300 sentences for focused practice, Gradual progression from beginner to advanced levels

**Features:** Vision Pro support

**In-app purchases:** none


### Justdown

[App page](https://appshunter.io/ios/app/justdown-furigana-notes/id6805135080)

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

**In-app purchases:** none


## Frequently asked questions

### Is 갑자기말되는일본어 문법세상 free?

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

### Is Justdown free?

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

### Do 갑자기말되는일본어 문법세상 or Justdown have ads?

Neither 갑자기말되는일본어 문법세상 nor Justdown shows ads.

### Which is updated more often, 갑자기말되는일본어 문법세상 or Justdown?

갑자기말되는일본어 문법세상 ships an update fortnightly, and Justdown every 2 days. Most recently, 갑자기말되는일본어 문법세상 was updated on October 30, 2026 and Justdown on October 15, 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.*