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Which is very hard, because most of these devices don't work locally. They communicate via the cloud to your app.

In most cases companies don't want to give you Matter or HomeKit, because it means they cannot sell you more through their app.

Wyze has ads everytime you open it. So does Honeywell. Hell, even the internet-loved Ecobee has a banner that shifts everything down most of the time that you open the app. And for that last one, you _have_ to use their app to control the fan, as they don't expose separate fan controls over HomeKit...

> Which is very hard, because most of these devices don't work locally.

Then don't buy those devices. All of my home devices are either Zigbee (local-only) or were bought specifically because they can be reflashed with open firmware to liberate them from the cloud.

> Hell, even the internet-loved Ecobee has a banner that shifts everything down most of the time that you open the app.

I don't want such apps. The only app I need is Home Assistant, and installing proprietary software on my phone (running GrapheneOS) is out of the question.