No, the Pro 34 and its smaller sibling the Pro 22 do not have WiFi connectivity so you cannot control them via the Traeger App.

The Pro 22 and Pro 34 are first-generation Traeger Pro Series models. Their successors are the Pro 575 and the Pro 780 which do have WiFi (branded as WiFire) and they also have a PID control panel which is much more accurate at temperature regulation.

Another important difference is the first-generation Traeger Pro Series models only have a maximum temperature setting of 450 degrees. Whereas the second-generation models can be set up to 500 degrees.