# X2B vs KNX2GO

The clearest difference is price: X2B at Free against KNX2GO's $24.99. KNX2GO's advantage is update cadence (every 6 weeks vs every 19 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

X2B is free to download; KNX2GO costs $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

X2B ships an update every 19 months, KNX2GO every 6 weeks. The most recent releases landed on September 27, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | X2B | KNX2GO |
| --- | --- | --- |
| Price | **Free** | $24.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 6 weeks** |
| Size | 2 MB | 26 MB |
| Requires iOS | 17.5 | **16.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [innoEnergy GmbH](https://appshunter.io/developer/1473677176) | [Alexander Maier GmbH](https://appshunter.io/developer/563901268) |

## What reviewers say

### X2B

[App page](https://appshunter.io/ios/app/x2b/id1535254096)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### KNX2GO

[App page](https://appshunter.io/ios/app/knx2go/id6781625478)

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

**In-app purchases:** none


## Frequently asked questions

### Is X2B free?

X2B is free to download, with no in-app purchases.

### Is KNX2GO free?

KNX2GO costs $24.99, with no in-app purchases.

### Do X2B or KNX2GO have ads?

Neither X2B nor KNX2GO shows ads.

### Which is updated more often, X2B or KNX2GO?

X2B ships an update every 19 months, and KNX2GO every 6 weeks. Most recently, X2B was updated on September 27, 2026 and KNX2GO on October 15, 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.*