# Attack Alarm vs myDOOR Dierre

The clearest difference is price: myDOOR Dierre at Free against Attack Alarm's $0.99. myDOOR Dierre also leads on iOS requirement (12.0 vs 18.6). On review sentiment, update cadence, ads and in-app purchases there is nothing between them.

myDOOR Dierre is free to download; Attack Alarm costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Attack Alarm ships an update every 4 weeks, myDOOR Dierre every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Attack Alarm | myDOOR Dierre |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | **25.0% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 2 months |
| Monetization | Paid | **Free** |
| Size | 28 MB | 40 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mark David](https://appshunter.io/developer/328738635) | [Dierre Spa](https://appshunter.io/developer/450736225) |

## What reviewers say

### Attack Alarm

[App page](https://appshunter.io/ios/app/attack-alarm/id342321684)

This personal safety app provides quick, one-tap alerts with customizable options like loud sirens or discreet silent modes. It offers tools to contact trusted individuals or emergency services, find nearby help, and document incidents.

**Highlights:** One-tap personal safety alarm, Loud siren and silent modes, Customizable alert tones and effects, Trusted contact and emergency calling, Nearby help finder, Incident timeline with export

**In-app purchases:** none


### myDOOR Dierre

[App page](https://appshunter.io/ios/app/mydoor-dierre/id1545899347)

Control your door lock remotely using Bluetooth Low Energy technology. Manage settings, grant access, and open or close your door with an intuitive smartphone interface.

**Highlights:** Remote door lock control, Bluetooth LE connectivity, Access management, Guest profile management, Key-Fob radio control, Open and close door

**In-app purchases:** none


## Frequently asked questions

### Is Attack Alarm free?

Attack Alarm costs $0.99, with no in-app purchases.

### Is myDOOR Dierre free?

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

### Do Attack Alarm or myDOOR Dierre have ads?

Neither Attack Alarm nor myDOOR Dierre shows ads.

### Which is updated more often, Attack Alarm or myDOOR Dierre?

Attack Alarm ships an update every 4 weeks, and myDOOR Dierre every 2 months. Most recently, Attack Alarm was updated on November 6, 2026 and myDOOR Dierre 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.*