# UTaipei行動圖書館 vs 青空文庫Stella

The clearest difference is in-app purchases: UTaipei行動圖書館 at none against 青空文庫Stella's 3. UTaipei行動圖書館 also leads on iOS requirement (11.0 vs 13.0). 青空文庫Stella's advantage is update cadence (every 4 days vs every 18 months). On price, ads and device support there is nothing between them.

Both are free to download. 青空文庫Stella sells 3 in-app purchases, starting at $0.99 per month. UTaipei行動圖書館 asks for nothing beyond the download.

UTaipei行動圖書館 ships an update every 18 months, 青空文庫Stella every 4 days. The most recent releases landed on October 26, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | UTaipei行動圖書館 | 青空文庫Stella |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 21 MB | 195 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [凌網科技股份有限公司, Hyweb Technology Co., Ltd.](https://appshunter.io/developer/419081258) | [kyohei sugita](https://appshunter.io/developer/1850242429) |

## What reviewers say

### UTaipei行動圖書館

[App page](https://appshunter.io/ios/app/utaipei/id905854374)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 UTaipei行動圖書館 free?

UTaipei行動圖書館 is free to download, with no in-app purchases.

### Is 青空文庫Stella free?

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

### Do UTaipei行動圖書館 or 青空文庫Stella have ads?

Neither UTaipei行動圖書館 nor 青空文庫Stella shows ads.

### Which is updated more often, UTaipei行動圖書館 or 青空文庫Stella?

UTaipei行動圖書館 ships an update every 18 months, and 青空文庫Stella every 4 days. Most recently, UTaipei行動圖書館 was updated on October 26, 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.*