# 素早く図書館蔵書検索 vs My ルーレット

The clearest difference is update cadence: My ルーレット at fortnightly against 素早く図書館蔵書検索's every 13 months. 素早く図書館蔵書検索's advantage is iOS requirement (8.0 vs 26). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

素早く図書館蔵書検索 ships an update every 13 months, My ルーレット fortnightly. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 素早く図書館蔵書検索 | My ルーレット |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Fortnightly** |
| Size | 6 MB | 136 MB |
| Requires iOS | **8.0** | 26 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tsukurusha, LLC](https://appshunter.io/developer/312173424) | [deskplate](https://appshunter.io/developer/386580886) |

## What reviewers say

### 素早く図書館蔵書検索

[App page](https://appshunter.io/ios/app/libron/id478517535)

**Features:** macOS Compatibility

**In-app purchases:** none


### My ルーレット

[App page](https://appshunter.io/ios/app/my/id509923985)

**In-app purchases:** none


## Frequently asked questions

### Is 素早く図書館蔵書検索 free?

素早く図書館蔵書検索 is free to download, with no in-app purchases.

### Is My ルーレット free?

My ルーレット is free to download, with no in-app purchases.

### Do 素早く図書館蔵書検索 or My ルーレット have ads?

Neither 素早く図書館蔵書検索 nor My ルーレット shows ads.

### Which is updated more often, 素早く図書館蔵書検索 or My ルーレット?

素早く図書館蔵書検索 ships an update every 13 months, and My ルーレット fortnightly. Most recently, 素早く図書館蔵書検索 was updated on October 8, 2026 and My ルーレット on October 16, 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.*