# 海上自衛隊AR vs サイレンコレクション

The clearest difference is ads: 海上自衛隊AR at none against サイレンコレクション's shown. 海上自衛隊AR also leads on update cadence (every 3 months vs every 7 months) and iOS requirement (11.0 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.

海上自衛隊AR ships an update every 3 months, サイレンコレクション every 7 months. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 海上自衛隊AR | サイレンコレクション |
| --- | --- | --- |
| 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 | **No** | Yes |
| Update frequency | **Every 3 months** | Every 7 months |
| Size | 146 MB | 27 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Prage Co., Ltd.](https://appshunter.io/developer/535422123) | [BPM Japan LLC](https://appshunter.io/developer/1549232497) |

## What reviewers say

### 海上自衛隊AR

[App page](https://appshunter.io/ios/app/ar/id1480361105)

**In-app purchases:** none


### 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


## Frequently asked questions

### Is 海上自衛隊AR free?

海上自衛隊AR is free to download, with no in-app purchases.

### 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.

### Do 海上自衛隊AR or サイレンコレクション have ads?

サイレンコレクション shows ads; 海上自衛隊AR does not.

### Which is updated more often, 海上自衛隊AR or サイレンコレクション?

海上自衛隊AR ships an update every 3 months, and サイレンコレクション every 7 months. Most recently, 海上自衛隊AR was updated on October 29, 2026 and サイレンコレクション on October 30, 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.*