# サイレンコレクション vs 3単語日記

The clearest difference is ads: 3単語日記 at none against サイレンコレクション's shown. 3単語日記 also leads on update cadence (weekly vs every 7 months) and iOS requirement (12.0 vs 15.0). On price, 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.

サイレンコレクション ships an update every 7 months, 3単語日記 weekly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | サイレンコレクション | 3単語日記 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/id1645780316/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Weekly** |
| Size | 27 MB | 37 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BPM Japan LLC](https://appshunter.io/developer/1549232497) | [KnotNest](https://appshunter.io/developer/1813321541) |

## What reviewers say

### サイレンコレクション

[App page](https://appshunter.io/ios/app/id1645780316)

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

**In-app purchases:** none


### 3単語日記

[App page](https://appshunter.io/ios/app/3/id6745698061)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is サイレンコレクション free?

サイレンコレクション is free to download, with no in-app purchases.

### Is 3単語日記 free?

3単語日記 is free to download, with no in-app purchases.

### Do サイレンコレクション or 3単語日記 have ads?

サイレンコレクション shows ads; 3単語日記 does not.

### Which is updated more often, サイレンコレクション or 3単語日記?

サイレンコレクション ships an update every 7 months, and 3単語日記 weekly. Most recently, サイレンコレクション was updated on October 30, 2026 and 3単語日記 on October 28, 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.*