Why does everything need to be controlled by app. – Joule: Sous Vide by ChefSteps Review

I want to like this device better than Anova but I hate that I have to involve my phone. Why can’t this be an add on but still put a tiny display in the device itself. I only need to control temperature.
Review by Brendan Levy on Joule: Sous Vide by ChefSteps.