# Balstil vs KNX Pro Tester

The clearest difference is price: Balstil at Free against KNX Pro Tester's $17.99. Balstil also leads on iOS requirement (17.1 vs 26.4). KNX Pro Tester's advantage is update cadence (every 3 days vs every 5 weeks). On ads, in-app purchases and device support there is nothing between them.

Balstil is free to download; KNX Pro Tester costs $17.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Balstil ships an update every 5 weeks, KNX Pro Tester every 3 days. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Balstil | KNX Pro Tester |
| --- | --- | --- |
| Price | **Free** | $17.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Size | 195 MB | 225 MB |
| Requires iOS | **17.1** | 26.4 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Marek Bal](https://appshunter.io/developer/1725468691) | [Davide Grandeppieno](https://appshunter.io/developer/908961846) |

## What reviewers say

### Balstil

[App page](https://appshunter.io/ios/app/balstil/id6503335043)

**Features:** macOS Compatibility

**In-app purchases:** none


### KNX Pro Tester

[App page](https://appshunter.io/ios/app/knx-pro-tester/id6751961044)

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

**In-app purchases:** none


## Frequently asked questions

### Is Balstil free?

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

### Is KNX Pro Tester free?

KNX Pro Tester costs $17.99, with no in-app purchases.

### Do Balstil or KNX Pro Tester have ads?

Neither Balstil nor KNX Pro Tester shows ads.

### Which is updated more often, Balstil or KNX Pro Tester?

Balstil ships an update every 5 weeks, and KNX Pro Tester every 3 days. Most recently, Balstil was updated on November 4, 2026 and KNX Pro Tester on November 5, 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.*