I just remembered, my wife bought a floor cleaner (carpet, hardwood, etc) that's WiFi enabled. Apparently it tells her when the detergent solution is low...
She certainly didn't buy it for this feature but she may have installed the necessary app.
My daughter and I were looking at washers and dryers at HD once and encountered WiFi-enabled versions. We both asked "why?". I realize one reason is it can notify you when a load is done. I guess if we were washing a lot of loads while doing other things, that could be handy but not for me. I think another option was if you loaded it up with clothes and detergent, closed the lid and walked away and forgot to hit 'start'. I suppose you could do this manually. Then again, from a safety standpoint, they might not allow this.

My daughter and I were looking at washers and dryers at HD once and encountered WiFi-enabled versions. We both asked "why?". I realize one reason is it can notify you when a load is done. I guess if we were washing a lot of loads while doing other things, that could be handy but not for me. I think another option was if you loaded it up with clothes and detergent, closed the lid and walked away and forgot to hit 'start'. I suppose you could do this manually. Then again, from a safety standpoint, they might not allow this.