It wasn’t about Wetherspoons in particular though they do have a very good app. Apps like W8R exist and allow you to both order and tip:
My point is that TiPJAR in its current form separates the two. It seems inevitable and accelerating that more premises will add technical solutions to ordering for convenience, hygiene and safety, and the question is: will having two completely separate solutions, one for ordering and another for tipping make sense?