# F vs Brel Smart Building

The clearest difference is update cadence: F at monthly against Brel Smart Building's every 4 months. Brel Smart Building's advantage is iOS requirement (12 vs 15.6). 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.

F ships an update monthly, Brel Smart Building every 4 months. The most recent releases landed on August 26, 2026 and May 13, 2026 respectively.

## The numbers

| Metric | F | Brel Smart Building |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/f-linx/id6447948771/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 14.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Free | — |
| Size | 134 MB | 37 MB |
| Requires iOS | 15.6 | **12** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [ShenZhen BitDoor Technology Co.,Ltd.](https://appshunter.io/developer/1737168151) | [BREL NEDERLAND BV](https://appshunter.io/developer/1463935129) |

## What reviewers say

### F

[App page](https://appshunter.io/ios/app/f-linx/id6447948771)

Control residential, commercial, and industrial door and gate openers with this app. It offers essential functions like opening, stopping, closing, partial opening, and LED light control, all configurable through the platform.

**Highlights:** Open/Stop/Close doors and gates, Partial open function, LED light control, Auto close setting, Force margin adjustment, Configurable through the app

**Features:** Vision Pro support

**In-app purchases:** none


### Brel Smart Building

[App page](https://appshunter.io/ios/app/brel-smart-building/id6747348549)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is F free?

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

### Is Brel Smart Building free?

Brel Smart Building is free to download, with no in-app purchases.

### Do F or Brel Smart Building have ads?

Neither F nor Brel Smart Building shows ads.

### Which is updated more often, F or Brel Smart Building?

F ships an update monthly, and Brel Smart Building every 4 months. Most recently, F was updated on August 26, 2026 and Brel Smart Building on May 13, 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.*