# StarLine Master vs D

The clearest difference is review sentiment: D at 100% against StarLine Master's 56%. D also leads on ratings volume (116 vs 1) and update cadence (every 3 weeks vs every 2 months). StarLine Master's advantage is rating (5.0 vs 4.8). On price, ads, in-app purchases and monetization model there is nothing between them.

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

StarLine Master holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: D has 116 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 56% of StarLine Master's written reviews are positive against 100% of D's, so the app with the better star average is not the one people write more warmly about.

StarLine Master ships an update every 2 months, D every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | StarLine Master | D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/starline-master/id1496343179/reviews)** | [4.8 (116 ratings)](https://appshunter.io/ios/app/d-keys/id1502365079/reviews) |
| Number of ratings | 1 | **116** |
| Positive reviews | 55.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 55 MB | 135 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [StarLine LLC](https://appshunter.io/developer/492074740) | [Kuznetsova Vera](https://appshunter.io/developer/1451290672) |

## What reviewers say

### StarLine Master

[App page](https://appshunter.io/ios/app/starline-master/id1496343179)

This application allows professional installers to configure and update a variety of security devices. It is intended exclusively for fitters and not for end-users. For customer-facing control and configuration, a separate application is available.

**Highlights:** Configure StarLine devices, Update StarLine devices, Wide range of device support, Professional installer focused

**Features:** Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is StarLine Master free?

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

### Is D free?

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

### Which has better reviews, StarLine Master or D?

StarLine Master is rated higher. StarLine Master averages 5.0 out of 5 from 1 ratings, while D averages 4.8 from 116 ratings.

### Do StarLine Master or D have ads?

Neither StarLine Master nor D shows ads.

### Which is updated more often, StarLine Master or D?

StarLine Master ships an update every 2 months, and D every 3 weeks. Most recently, StarLine Master was updated on November 3, 2026 and D on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*