# Düdüğüm vs Rasathane

The clearest difference is review sentiment: Düdüğüm at 86% against Rasathane's 30%. Rasathane's advantage is rating (5.0 vs 4.7). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Rasathane holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews complicate that: 86% of Düdüğüm's written reviews are positive against 30% of Rasathane's, so the app with the better star average is not the one people write more warmly about.

Düdüğüm ships an update every 6 weeks, Rasathane every 4 weeks. The most recent releases landed on October 23, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Düdüğüm | Rasathane |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/dudugum/id1538329721/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/rasathane/id1591613322/reviews)** |
| Number of ratings | 3 | 3 |
| Positive reviews | **86.0% of reviews** | 30.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 weeks** |
| Monetization | Free | Free |
| Size | 25 MB | 24 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HDS OTOMASYON GUVENLIK VE YAZILIM TEKNOLOJILERI SANAYI TICARET LIMITED SIRKETI](https://appshunter.io/developer/1523706871) | [Bogazici University](https://appshunter.io/developer/1591613324) |

## What reviewers say

### Düdüğüm

[App page](https://appshunter.io/ios/app/dudugum/id1538329721)

This app generates a whistle sound to signal your location in emergencies or when trapped. It can also send an SMS to pre-selected contacts to inform them of your safety status. The application is free and ad-free, developed for humanitarian purposes.

**Highlights:** Generates whistle sound, Sends location SMS, Pre-set contact alerts, Ad-free experience, Humanitarian purpose

**Features:** macOS Compatibility

**In-app purchases:** none


### Rasathane

[App page](https://appshunter.io/ios/app/rasathane/id1591613322)

Get real-time earthquake notifications for Turkey and surrounding areas. View seismic events on a map, filter by magnitude and time, and see your distance to earthquakes. Includes historical earthquake data.

**Highlights:** Real-time earthquake notifications, Filter notifications by magnitude, List earthquakes by time period, Search and sort earthquakes by magnitude, View earthquakes on a map, Historical earthquake data, Calculate distance to earthquakes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Düdüğüm free?

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

### Is Rasathane free?

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

### Which has better reviews, Düdüğüm or Rasathane?

Rasathane is rated higher. Düdüğüm averages 4.7 out of 5 from 3 ratings, while Rasathane averages 5.0 from 3 ratings.

### Do Düdüğüm or Rasathane have ads?

Neither Düdüğüm nor Rasathane shows ads.

### Which is updated more often, Düdüğüm or Rasathane?

Düdüğüm ships an update every 6 weeks, and Rasathane every 4 weeks. Most recently, Düdüğüm was updated on October 23, 2026 and Rasathane on October 19, 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.*