# Siren Sounds! vs Thunderstorm simulation

The clearest difference is price: Thunderstorm simulation at Free against Siren Sounds!'s $0.99. Thunderstorm simulation also leads on rating (4.4 vs 4.0). Siren Sounds!'s advantage is ads (none vs shown) and review sentiment (67% vs 50%). On ratings volume, update cadence, in-app purchases and device support there is nothing between them.

Thunderstorm simulation is free to download; Siren Sounds! costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Thunderstorm simulation holds the better App Store score, 4.4 against 4.0. Both are backed by a comparable volume of ratings — 31 and 28 respectively. Written reviews complicate that: 67% of Siren Sounds!'s written reviews are positive against 50% of Thunderstorm simulation's, so the app with the better star average is not the one people write more warmly about.

Siren Sounds! ships an update every 4 months, Thunderstorm simulation every 7 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Siren Sounds! | Thunderstorm simulation |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.0 (31 ratings)](https://appshunter.io/ios/app/siren-sounds/id1070675530/reviews) | **[4.4 (28 ratings)](https://appshunter.io/ios/app/thunderstorm-simulation/id1668589893/reviews)** |
| Number of ratings | **31** | 28 |
| Positive reviews | **66.7% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | Paid | **Ad-supported** |
| Size | 19 MB | 10 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Leafgreen](https://appshunter.io/developer/1070668841) | [Yaroslav Novytskyi](https://appshunter.io/developer/1668442756) |

## What reviewers say

### Siren Sounds!

[App page](https://appshunter.io/ios/app/siren-sounds/id1070675530)

Experience a wide range of authentic siren and alarm sounds, from emergency vehicles to security systems. Use them for fun, pranks, or even to deter unwanted visitors. Perfect for entertainment and educational purposes.

**Highlights:** Authentic siren and alarm sounds, Variety of emergency vehicle sounds, Security and car alarm sounds, Prank potential, Educational for children, Life-like audio quality

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

**In-app purchases:** none


### Thunderstorm simulation

[App page](https://appshunter.io/ios/app/thunderstorm-simulation/id1668589893)

Experience the power of storms with this simulator. Create lightning with a tap, control rain and wind, or let the app run in automatic mode for a relaxing visual and auditory experience. Choose from three atmospheric locations.

**Highlights:** Create lightning with touch, Realistic thunder and rain sounds, Automatic storm simulation mode, Control rain and wind, Three scenic locations, Ideal for relaxation and meditation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Siren Sounds! free?

Siren Sounds! costs $0.99, with no in-app purchases.

### Is Thunderstorm simulation free?

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

### Which has better reviews, Siren Sounds! or Thunderstorm simulation?

Thunderstorm simulation is rated higher. Siren Sounds! averages 4.0 out of 5 from 31 ratings, while Thunderstorm simulation averages 4.4 from 28 ratings.

### Do Siren Sounds! or Thunderstorm simulation have ads?

Thunderstorm simulation shows ads; Siren Sounds! does not.

### Which is updated more often, Siren Sounds! or Thunderstorm simulation?

Siren Sounds! ships an update every 4 months, and Thunderstorm simulation every 7 months. Most recently, Siren Sounds! was updated on November 2, 2026 and Thunderstorm simulation on November 3, 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.*