# KNX V2 vs Smartbell

The clearest difference is update cadence: Smartbell at every 6 weeks against KNX V2's every 4 months. 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.

KNX V2 ships an update every 4 months, Smartbell every 6 weeks. The most recent releases landed on August 27, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | KNX V2 | Smartbell |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Size | 56 MB | 29 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Feller AG](https://appshunter.io/developer/525095492) | [Codext GmbH](https://appshunter.io/developer/1488755999) |

## What reviewers say

### KNX V2

[App page](https://appshunter.io/ios/app/knx-v2/id1343197447)

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

**In-app purchases:** none


### Smartbell

[App page](https://appshunter.io/ios/app/smartbell/id1521007837)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KNX V2 free?

KNX V2 is free to download, with no in-app purchases.

### Is Smartbell free?

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

### Do KNX V2 or Smartbell have ads?

Neither KNX V2 nor Smartbell shows ads.

### Which is updated more often, KNX V2 or Smartbell?

KNX V2 ships an update every 4 months, and Smartbell every 6 weeks. Most recently, KNX V2 was updated on August 27, 2026 and Smartbell on September 17, 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.*