# KNX APP vs D1

The clearest difference is in-app purchases: KNX APP at none against D1's 9. KNX APP also leads on ads (none vs shown) and device support (4 vs 2). D1's advantage is update cadence (every 2 weeks vs every 5 months). On price and iOS requirement there is nothing between them.

Both are free to download. D1 sells 9 in-app purchases, starting at $5.99 per month. KNX APP asks for nothing beyond the download.

KNX APP ships an update every 5 months, D1 every 2 weeks. The most recent releases landed on September 26, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | KNX APP | D1 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/knx-app-control/id1099217049/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 104 MB | 73 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Busch-Jaeger Elektro GmbH](https://appshunter.io/developer/542311466) | [Ron Azogui](https://appshunter.io/developer/973043504) |

## What reviewers say

### KNX APP

[App page](https://appshunter.io/ios/app/knx-app-control/id1099217049)

Control your home or office remotely with custom scenes and time programs. Manage lighting, temperature, security, and more. Offers live previews, camera control, and push notifications for alarms.

**Highlights:** Custom scene creation, Time program management, Lighting and blind control, Temperature management, IP camera pan, tilt, zoom, Alarm notifications, PIN page protection

**Features:** macOS Compatibility

**In-app purchases:** none


### D1

[App page](https://appshunter.io/ios/app/d1-join-d1/id6760951356)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Join D1 Pro | $5.99 | per month |
| Mentor Tier 1 | $0.99 | one-time |
| Mentor Tier 2 | $2.99 | one-time |
| Mentor Tier 3 | $3.99 | one-time |
| Mentor Tier 4 | $5.99 | one-time |
| Mentor Tier 5 | $14.99 | one-time |
| Mentor Tier 6 | $29.99 | one-time |
| Mentor Tier 7 | $39.99 | one-time |
| Mentor Tier 8 | $59.99 | one-time |


## Frequently asked questions

### Is KNX APP free?

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

### Is D1 free?

D1 is free to download, with in-app purchases available.

### Do KNX APP or D1 have ads?

D1 shows ads; KNX APP does not.

### Which is updated more often, KNX APP or D1?

KNX APP ships an update every 5 months, and D1 every 2 weeks. Most recently, KNX APP was updated on September 26, 2026 and D1 on October 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.*