# D vs Ростовводоканал

The clearest difference is review sentiment: D at 100% against Ростовводоканал's 12%. D also leads on rating (4.8 vs 2.5) and ratings volume (116 vs 2). Ростовводоканал's advantage is iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

D holds the better App Store score, 4.8 against 2.5. That said, the two scores are not equally well evidenced: D has 116 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of D's written reviews are positive against 12% of Ростовводоканал's.

D ships an update every 3 weeks, Ростовводоканал every 2 months. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | D | Ростовводоканал |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (116 ratings)](https://appshunter.io/ios/app/d-keys/id1502365079/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/id1565941301/reviews) |
| Number of ratings | **116** | 2 |
| Positive reviews | **100.0% of reviews** | 12.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 135 MB | 32 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kuznetsova Vera](https://appshunter.io/developer/1451290672) | [ООО "Стек-ИТ"](https://appshunter.io/developer/1096073865) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-keys/id1502365079)

Remotely control your intercom with a single button press on your smartphone. Open your building's entrance door from anywhere using Wi-Fi or mobile data. Registration is required to ensure security and access.

**Highlights:** Remote door opening, Single-button control, Works via Wi-Fi or mobile data, Supports multiple entrances, Remote access for guests, Secure registration process

**In-app purchases:** none


### Ростовводоканал

[App page](https://appshunter.io/ios/app/id1565941301)

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

**In-app purchases:** none


## Frequently asked questions

### Is D free?

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

### Is Ростовводоканал free?

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

### Which has better reviews, D or Ростовводоканал?

D is rated higher. D averages 4.8 out of 5 from 116 ratings, while Ростовводоканал averages 2.5 from 2 ratings.

### Do D or Ростовводоканал have ads?

Neither D nor Ростовводоканал shows ads.

### Which is updated more often, D or Ростовводоканал?

D ships an update every 3 weeks, and Ростовводоканал every 2 months. Most recently, D was updated on October 24, 2026 and Ростовводоканал on October 22, 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.*