# Busch vs Rembelle

The clearest difference is in-app purchases: Busch at none against Rembelle's 2. Busch also leads on iOS requirement (12.4 vs 17.0). Rembelle's advantage is update cadence (every 2 months vs every 34 months). On price, ads and device support there is nothing between them.

Both are free to download. Rembelle sells 2 in-app purchases, starting at $3.99 per month. Busch asks for nothing beyond the download.

Busch ships an update every 34 months, Rembelle every 2 months. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Busch | Rembelle |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 34 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 4 MB | 45 MB |
| Requires iOS | **12.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Busch-Jaeger Elektro GmbH](https://appshunter.io/developer/542311466) | [Burak Akbay](https://appshunter.io/developer/1895485036) |

## What reviewers say

### Busch

[App page](https://appshunter.io/ios/app/busch-voicecontrol/id1523501972)

Connect your KNX smart home system to modern ecosystems like Apple HomeKit, Google Assistant, Amazon Alexa, and Matter. Control KNX devices with your voice and integrate Matter devices into your KNX setup for seamless smart home interaction.

**Highlights:** KNX to HomeKit, Google Assistant, Alexa, Matter integration, Voice control for KNX devices, Matter device integration into KNX, KNX device integration into Matter ecosystems, Easy setup and configuration, Automatic room assignment, Software update import

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

**In-app purchases:** none


### Rembelle

[App page](https://appshunter.io/ios/app/rembelle/id6798366056)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rembelle Premium Monthly | $3.99 | per month |
| Rembelle Premium Yearly | $19.99 | per year |


## Frequently asked questions

### Is Busch free?

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

### Is Rembelle free?

Rembelle is free to download, with in-app purchases available.

### Do Busch or Rembelle have ads?

Neither Busch nor Rembelle shows ads.

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

Busch ships an update every 34 months, and Rembelle every 2 months. Most recently, Busch was updated on November 3, 2026 and Rembelle on November 6, 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.*