# WI vs Qbus Building Control

The clearest difference is update cadence: Qbus Building Control at every 2 months against WI's every 4 months. WI's advantage is iOS requirement (12.2 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.

WI ships an update every 4 months, Qbus Building Control every 2 months. The most recent releases landed on October 21, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | WI | Qbus Building Control |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wi-box/id1464664487/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 13.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 65 MB | 312 MB |
| Requires iOS | **12.2** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fermax](https://appshunter.io/developer/891332024) | [Qbus](https://appshunter.io/developer/1229835233) |

## What reviewers say

### WI

[App page](https://appshunter.io/ios/app/wi-box/id1464664487)

This app allows you to receive and answer calls from your FERMAX VDS video door entry system directly on your smartphone. It replicates the functionality of your video door entry monitor, requiring a WI-BOX device and home WiFi for setup. Follow the in-app guide to connect.

**Highlights:** Receive video door entry calls on smartphone, Answer calls remotely, Access video door entry monitor functions, Step-by-step setup guide, Requires WI-BOX device and WiFi

**Features:** macOS Compatibility

**In-app purchases:** none


### Qbus Building Control

[App page](https://appshunter.io/ios/app/qbus-building-control/id6762758888)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WI free?

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

### Is Qbus Building Control free?

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

### Do WI or Qbus Building Control have ads?

Neither WI nor Qbus Building Control shows ads.

### Which is updated more often, WI or Qbus Building Control?

WI ships an update every 4 months, and Qbus Building Control every 2 months. Most recently, WI was updated on October 21, 2026 and Qbus Building Control on October 25, 2026.

---

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