i3 KNX vs ST4U
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
i3 KNX
Control your KNX smart home, office, or hotel automation system from a single interface. Integrate cameras, intercoms, and multimedia for comprehensive management. Create timers, schedules, and utilize voice control for seamless automation.
- KNX system integration
- Camera and intercom integration
- Timer and schedule creation
- Voice control capabilities
- Secure remote access
- Fast project setup
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i3 KNX is an app to control KNX Home Server, a home automation server, that controls smart home, office and hotel or another automation object based on KNX system. i3 KNX allows to integrate control of KNX professional automation systems cameras, SIP intercoms and multimedia in one app and one interface. Main capabilities of KNX Home Server: 1. Integration with KNX. 2. Fast project creation. 3. Secure remote control. 4. Integration with cameras, intercom. 5. Creating timers and schedules. 6. Voice control. We'll gladly answer your questions, if you send them to support@iridiummobile.ru
ST4U
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With the ST4U App we offer you the possibility to control and manage your Smart Home via your Smartphone. Brands such as Velbus, Niko, Philips, Sonos, etc. are supported. Our mission, vision and goal is to bring various brands together under 1 platform in order to arrive at 1 total concept. In addition, we also want to integrate devices or parts that are not yet 'Smart' in our platform, this can be done via home automation (e.g. Velbus) or a tailor-made solution. To ensure that you as a customer can use these devices optimally 'Smart', we have created our own platform for this, we call this platform ST4U, Smart things for you! We offer our own Cloud Service and hereby offer you an Application that you can use on Laptop, Tablet or Smartphone.
Screenshots
Verdict
The clearest difference is update cadence: ST4U at every 3 weeks against i3 KNX's every 2 months. i3 KNX's advantage is iOS requirement (11.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
i3 KNX ships an update every 2 months, ST4U every 3 weeks. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.
| Parameter | i3 KNX | ST4U |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 53 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | iRidium Ltd. | HePoJ |
In-app purchases
i3 KNX
No in-app purchases
ST4U
No in-app purchases
