Our Washing Machine has an app.
It's ridiculous. It literally, literally solves no problem for me.
We set it up when the machine was new, on all our phones. Seemed to have a start stop option, great.
Except... It turns out that you need to press the paired phone onto the control panel to configure the wash load and start/stop/pause. NOT use it remotely as I'd assumed.
We've used it about three times because it takes 10x as long. Oh, my phone's in the sitting room (washing machine is in kitchen).. or, oh it's not paired, give it 20 seconds to reconnect.. or, stand waving it near the control panel for a bit, kinda like self scan checkouts.. utterly useless!
Or, I can do all that in about 2 seconds with 100% reliability.. by pressing the actual physical button 
It's a silly "feature", it's like they came up with a solution to a problem no one has!