# 超好用韩语语法书 vs KOOBONE

The clearest difference is review sentiment: KOOBONE at 82% against 超好用韩语语法书's 14%. KOOBONE also leads on in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 12 months). 超好用韩语语法书's advantage is iOS requirement (11.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. 超好用韩语语法书 sells 1 one-off in-app purchase. KOOBONE asks for nothing beyond the download.

超好用韩语语法书 ships an update every 12 months, KOOBONE every 3 weeks. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 超好用韩语语法书 | KOOBONE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/koobone/id6756718632/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 14.3% of reviews | **81.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 52 MB | 7 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [北京触阅信息科技有限公司](https://appshunter.io/developer/1420329654) | [Juanmoe tech (Shenzhen) Limited](https://appshunter.io/developer/1862471219) |

## What reviewers say

### 超好用韩语语法书

[App page](https://appshunter.io/ios/app/id1031009954)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 超好用韩语语法书 | $2.99 | one-time |


### KOOBONE

[App page](https://appshunter.io/ios/app/koobone/id6756718632)

This app helps manage EPUB comics by uploading them to cloud storage. It offers automatic categorization, custom tagging, and local caching for offline reading.

**Highlights:** EPUB comic management, Cloud storage, Automatic categorization, Custom tagging, Local caching for offline reading

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

**In-app purchases:** none


## Frequently asked questions

### Is 超好用韩语语法书 free?

超好用韩语语法书 is free to download, with in-app purchases available.

### Is KOOBONE free?

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

### Do 超好用韩语语法书 or KOOBONE have ads?

Neither 超好用韩语语法书 nor KOOBONE shows ads.

### Which is updated more often, 超好用韩语语法书 or KOOBONE?

超好用韩语语法书 ships an update every 12 months, and KOOBONE every 3 weeks. Most recently, 超好用韩语语法书 was updated on October 16, 2026 and KOOBONE on October 25, 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.*