I tried FulGaz a couple of years ago and found the UI a bit painful, but nice video quality. So it looks like Rouvy is winning the battle of the video style cycling Apps, which I think is probably a good thing. I quite like their augmented reality to mix with other riders in groups and races.

But I keep going back to Zwift, especially now the graphics and rendering is pretty slick. For me it still beats 2D video for a sense of speed and 3D space. Also can’t beat the variety of event rides in Zwift. I’m currently doing the Tour of Watopia series.