# D vs myDOOR Dierre

The clearest difference is review sentiment: D at 38% against myDOOR Dierre's 20%. D also leads on iOS requirement (10.0 vs 12.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

D ships an update every 5 weeks, myDOOR Dierre every 2 months. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | D | myDOOR Dierre |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **37.5% of reviews** | 20.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 23 MB | 40 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SECUREMME SRL](https://appshunter.io/developer/1076281466) | [Dierre Spa](https://appshunter.io/developer/450736225) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-smart/id1076281467)

Transform your existing European cylinder locks into smart locks with this device. Control your doors remotely via smartphone, manage access permissions, and create virtual keys. Enjoy convenient and secure access control without needing to replace your current lock.

**Highlights:** Automate European cylinder locks, Smartphone control via Bluetooth, Virtual key creation, Timed access management, User access control, Multiple access methods (transponder, keypad)

**Features:** macOS Compatibility

**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 D free?

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

### Is myDOOR Dierre free?

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

### Do D or myDOOR Dierre have ads?

Neither D nor myDOOR Dierre shows ads.

### Which is updated more often, D or myDOOR Dierre?

D ships an update every 5 weeks, and myDOOR Dierre every 2 months. Most recently, D was updated on October 7, 2026 and myDOOR Dierre on October 15, 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.*