# JUNG KNX SECURE SCANNER vs vuduo2

The clearest difference is in-app purchases: JUNG KNX SECURE SCANNER at none against vuduo2's 1. JUNG KNX SECURE SCANNER also leads on update cadence (every 3 months vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. vuduo2 sells 1 in-app purchase, starting at $0.99 per month. JUNG KNX SECURE SCANNER asks for nothing beyond the download.

JUNG KNX SECURE SCANNER ships an update every 3 months, vuduo2 every 9 months. The most recent releases landed on October 16, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | JUNG KNX SECURE SCANNER | vuduo2 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Free | — |
| Size | 3 MB | 39 MB |
| Requires iOS | **16.0** | 16.3 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Albrecht Jung GmbH & Co. KG](https://appshunter.io/developer/365020899) | [Andrew Birch](https://appshunter.io/developer/1843072279) |

## What reviewers say

### JUNG KNX SECURE SCANNER

[App page](https://appshunter.io/ios/app/jung-knx-secure-scanner/id1488292976)

This app simplifies securing KNX installations by scanning device QR codes. It generates protected JSON files or password-protected PDFs of device certificates, saving time and reducing errors for installers and system integrators.

**Highlights:** Scan KNX Secure device QR codes, Generate protected JSON files, Create password-protected PDF lists, Import device certificates into ETS, Save time and reduce errors, Bridge distance between site and integrator

**Features:** macOS Compatibility

**In-app purchases:** none


### vuduo2

[App page](https://appshunter.io/ios/app/vuduo2/id6753209162)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| vuduo2.monthly | $0.99 | per month |


## Frequently asked questions

### Is JUNG KNX SECURE SCANNER free?

JUNG KNX SECURE SCANNER is free to download, with no in-app purchases.

### Is vuduo2 free?

vuduo2 is free to download, with in-app purchases available.

### Do JUNG KNX SECURE SCANNER or vuduo2 have ads?

Neither JUNG KNX SECURE SCANNER nor vuduo2 shows ads.

### Which is updated more often, JUNG KNX SECURE SCANNER or vuduo2?

JUNG KNX SECURE SCANNER ships an update every 3 months, and vuduo2 every 9 months. Most recently, JUNG KNX SECURE SCANNER was updated on October 16, 2026 and vuduo2 on October 12, 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.*