There's only one version, and it has both an app and a an onboard UI based on a knob-button with an embedded dot matrix display. We're very conscious of the tradeoff between onboard and app controls.

The knob lets you have full manual control of temperature, but is not a good way to share recipes or learn how to cook something you don't do every day. So you want to make a quick panini or egg, the knob is great. On the other hand, we don't want to be like your microwave, with tons of features hidden behind scrolling text prompts and a keypad.

On the other hand, an app interface lets you have a different UI for each food type, so you can ask for a medium rare steak or light brown caramelized onions.

Once you've used the app to set things up, you'll be hands-on in the kitchen, so the next few steps can be controlled from the knob or the app.