# 超好用韩语语法书 vs 青空文庫Stella

The clearest difference is review sentiment: 青空文庫Stella at 100% against 超好用韩语语法书's 14%. 青空文庫Stella also leads on update cadence (every 4 days vs every 12 months). 超好用韩语语法书's advantage is iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases 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 and 青空文庫Stella sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

超好用韩语语法书 ships an update every 12 months, 青空文庫Stella every 4 days. Both last shipped on October 1, 2026.

## The numbers

| Metric | 超好用韩语语法书 | 青空文庫Stella |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 14.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 52 MB | 195 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [北京触阅信息科技有限公司](https://appshunter.io/developer/1420329654) | [kyohei sugita](https://appshunter.io/developer/1850242429) |

## 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 |


### 青空文庫Stella

[App page](https://appshunter.io/ios/app/stella/id6754812697)

Discover Japanese literature through intuition and chance. This app uses a unique Tarot feature to suggest passages, allowing you to build a personal bookshelf of resonant literary fragments. It offers tools for language learners, including furigana modes and customizable reading settings.

**Highlights:** Tarot-guided literary discovery, Personalized bookshelf, Furigana (Ruby) modes, Font size and theme customization, Aesthetic quote card creation, Reading profile sharing

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stellaプレミアム | $0.99 | per month |
| Stellaプレミアム | $0.99 | per month |
| Stellaプレミアム（年間） | $9.99 | per year |


## 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 青空文庫Stella free?

青空文庫Stella is free to download, with in-app purchases available.

### Do 超好用韩语语法书 or 青空文庫Stella have ads?

Neither 超好用韩语语法书 nor 青空文庫Stella shows ads.

### Which is updated more often, 超好用韩语语法书 or 青空文庫Stella?

超好用韩语语法书 ships an update every 12 months, and 青空文庫Stella every 4 days. Most recently, 超好用韩语语法书 was updated on October 1, 2026 and 青空文庫Stella on October 1, 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.*