# YYサイレンアラート vs CYCLE

The clearest difference is update cadence: YYサイレンアラート at monthly against CYCLE's every 7 months. CYCLE's advantage is iOS requirement (13.0 vs 15.0). 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.

YYサイレンアラート ships an update monthly, CYCLE every 7 months. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | YYサイレンアラート | CYCLE |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 7 months |
| Monetization | Free | — |
| Size | 6 MB | 53 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [株式会社エクォス・リサーチ](https://appshunter.io/developer/1483010608) | [Syntz合同会社](https://appshunter.io/developer/1804468914) |

## What reviewers say

### 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


### CYCLE

[App page](https://appshunter.io/ios/app/cycle/id6743774547)

**In-app purchases:** none


## Frequently asked questions

### 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.

### Is CYCLE free?

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

### Do YYサイレンアラート or CYCLE have ads?

Neither YYサイレンアラート nor CYCLE shows ads.

### Which is updated more often, YYサイレンアラート or CYCLE?

YYサイレンアラート ships an update monthly, and CYCLE every 7 months. Most recently, YYサイレンアラート was updated on September 24, 2026 and CYCLE on September 23, 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.*