# Busch vs Collumina

The clearest difference is update cadence: Collumina at every 6 weeks against Busch's every 5 months. Busch's advantage is iOS requirement (12 vs 16.4). 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.

Busch ships an update every 5 months, Collumina every 6 weeks. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Busch | Collumina |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (27 ratings)](https://appshunter.io/ios/app/busch-welcome/id920409045/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 25.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 116 MB | 84 MB |
| Requires iOS | **12** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Busch-Jaeger Elektro GmbH](https://appshunter.io/developer/542311466) | [Michael Rogulla](https://appshunter.io/developer/1448213310) |

## What reviewers say

### Busch

[App page](https://appshunter.io/ios/app/busch-welcome/id920409045)

This app allows you to manage your home's door communication system directly from your smartphone or tablet. See and hear visitors, open doors, and control lights remotely. Connects to your existing Welcome system for seamless integration.

**Highlights:** Receive door calls on mobile device, See and hear visitors, Remote door opening, Control lights, View door call history

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

**In-app purchases:** none


### Collumina

[App page](https://appshunter.io/ios/app/collumina/id1495187043)

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

**In-app purchases:** none


## Frequently asked questions

### Is Busch free?

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

### Is Collumina free?

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

### Do Busch or Collumina have ads?

Neither Busch nor Collumina shows ads.

### Which is updated more often, Busch or Collumina?

Busch ships an update every 5 months, and Collumina every 6 weeks. Most recently, Busch was updated on November 1, 2026 and Collumina on October 26, 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.*