# Düdüğüm vs QrX

The clearest difference is in-app purchases: Düdüğüm at none against QrX's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. QrX sells 2 in-app purchases, starting at $9.99 per 7 days. Düdüğüm asks for nothing beyond the download.

## The numbers

| Metric | Düdüğüm | QrX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/dudugum/id1538329721/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 86.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | Free | — |
| Size | 25 MB | 93 MB |
| Requires iOS | 15.6 | **15.5** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HDS OTOMASYON GUVENLIK VE YAZILIM TEKNOLOJILERI SANAYI TICARET LIMITED SIRKETI](https://appshunter.io/developer/1523706871) | [Sedat Gulmen](https://appshunter.io/developer/1529513162) |

## 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


### QrX

[App page](https://appshunter.io/ios/app/qrx-qr-code-and-barcode-scan/id6793149771)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $9.99 | per 7 days |
| Monthly Pro | $31.49 | per year |


## Frequently asked questions

### Is Düdüğüm free?

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

### Is QrX free?

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

### Do Düdüğüm or QrX have ads?

Neither Düdüğüm nor QrX 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.*