# SmartLink Control vs DoorSec

The clearest difference is iOS requirement: SmartLink Control at 9.0 against DoorSec's 13.0. 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.

SmartLink Control ships an update every 3 months, DoorSec every 4 months. Both last shipped on October 7, 2026.

## The numbers

| Metric | SmartLink Control | DoorSec |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free | — |
| Size | 19 MB | 12 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Holger Boelts](https://appshunter.io/developer/381063175) | [Telenot Electronic GmbH](https://appshunter.io/developer/401623741) |

## What reviewers say

### SmartLink Control

[App page](https://appshunter.io/ios/app/smartlink-control/id381063172)

This application provides mobile visualization for operating and displaying functions within a networked building automation environment. It connects to various common building systems and offers comfort functions like scene storage and presence simulation. It also supports media technology control via LAN, IR, or RS232.

**Highlights:** Control building automation systems, Visualize system functions, Connects to KNX, LON, Crestron, and more, Scene storage and presence simulation, Media technology control (LAN, IR, RS232), Sonos basic function control via UPnP

**Features:** macOS Compatibility

**In-app purchases:** none


### DoorSec

[App page](https://appshunter.io/ios/app/doorsec/id1541990693)

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

**In-app purchases:** none


## Frequently asked questions

### Is SmartLink Control free?

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

### Is DoorSec free?

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

### Do SmartLink Control or DoorSec have ads?

Neither SmartLink Control nor DoorSec shows ads.

### Which is updated more often, SmartLink Control or DoorSec?

SmartLink Control ships an update every 3 months, and DoorSec every 4 months. Most recently, SmartLink Control was updated on October 7, 2026 and DoorSec on October 7, 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.*