# 魚定規 vs YYサイレンアラート

The clearest difference is in-app purchases: YYサイレンアラート at none against 魚定規's 1. YYサイレンアラート also leads on review sentiment (50% vs 20%). 魚定規's advantage is iOS requirement (7.1 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. 魚定規 sells 1 one-off in-app purchase. YYサイレンアラート asks for nothing beyond the download.

## The numbers

| Metric | 魚定規 | YYサイレンアラート |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 20.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | — | Free |
| Size | 3 MB | 6 MB |
| Requires iOS | **7.1** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kaji Takatsugu](https://appshunter.io/developer/465688467) | [株式会社エクォス・リサーチ](https://appshunter.io/developer/1483010608) |

## What reviewers say

### 魚定規

[App page](https://appshunter.io/ios/app/id944341002)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告削除アドオン | $0.99 | one-time |


### YYサイレンアラート

[App page](https://appshunter.io/ios/app/yy/id6450823634)

This utility app visualizes important sounds like sirens and alarms, alerting users through visual cues and vibrations. It helps individuals who have difficulty hearing these sounds or want to be more aware of their auditory environment. The app detects various sounds, from emergency vehicles to everyday noises.

**Highlights:** Visualizes siren sounds, Alerts via display and vibration, Detects emergency vehicle sounds, Recognizes car horns and bicycle bells, Identifies fire alarms and intercoms, Visualizes speech, music, and breaking glass sounds

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

**In-app purchases:** none


## Frequently asked questions

### Is 魚定規 free?

魚定規 is free to download, with in-app purchases available.

### Is YYサイレンアラート free?

YYサイレンアラート is free to download, with no in-app purchases.

### Do 魚定規 or YYサイレンアラート have ads?

Neither 魚定規 nor YYサイレンアラート shows ads.

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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.*