# シラス vs 司書試験対策

The clearest difference is iOS requirement: 司書試験対策 at 15.1 against シラス's 17.6. On update cadence, ads, in-app purchases and device support there is nothing between them.

シラス ships an update every 3 weeks, 司書試験対策 monthly. The most recent releases landed on September 21, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | シラス | 司書試験対策 |
| --- | --- | --- |
| Price | **Free** | — |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id6450448654/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 45.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 49 MB | 34 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Shirasu LLC](https://appshunter.io/developer/1693341807) | [satoshi yoshida](https://appshunter.io/developer/1873856165) |

## What reviewers say

### シラス

[App page](https://appshunter.io/ios/app/id6450448654)

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

**In-app purchases:** none


### 司書試験対策

[App page](https://appshunter.io/ios/app/id6771861944)

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

**In-app purchases:** none


## Frequently asked questions

### Is シラス free?

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

### Is 司書試験対策 free?

Pricing for 司書試験対策 is not currently listed on the App Store.

### Do シラス or 司書試験対策 have ads?

Neither シラス nor 司書試験対策 shows ads.

### Which is updated more often, シラス or 司書試験対策?

シラス ships an update every 3 weeks, and 司書試験対策 monthly. Most recently, シラス was updated on September 21, 2026 and 司書試験対策 on September 8, 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.*