Home Assistant

So, the Home Assistant Companion app lets you control your smart home stuff from your phone, basically. Home Assistant itself is all about privacy and stuff, runs on your own stuff like a Raspberry Pi. It connects to all the big smart home brands, like Philips Hue, Sonos, you name it. It even finds new devices and sets them up for you. You can automate everything, like having your lights dim when you start a movie. And the best part? Your data stays on your home network, so no big companies snooping around. You can also control it from your car with Android Auto, or even your smartwatch. Basically, it turns your phone into a full-on home control center. Millions of people use it, so you know it's legit.