My appliances are ‘smart’ but I didn’t bother actually connecting them to my WiFi. I guess preheating the oven remotely could be cool(?) but nah.
The stuff I do use…
The microwave above the stove can talk via Bluetooth(no app or phone involvement at all). Turn on a burner and you can set it to turn on the light and/or vent fan. Another nicety is being able to set the clock on the stove with the full keypad and it just syncs to the microwave.
My favorite is still Microsoft Zune… Which was a music store, music subscription service, a desktop app, and a physical media player.
It’s like they want their stuff to literally be unsearchable on the internet. Renaming Remote Desktop to Windows App is a prime example of this. Good luck trying to search for that and get what you want.