"While I can't say much about the app, what I can say is the choice of parts is disappointing. The old train axles are gone :( The new train wheels are very resistant, lots of friction when used with a motor. :( There's only one magnet coupler, yet several of these new ones which are fiddly and awkward to use :(
Disappointed LEGO, very disappointed, The lack of trains made my lego is bad enough, but now if newer trains have these new wheels and axle-less wheels then it'll be very poor for the train fans."