When I see a guy on the same exact machine as me, showing bad form like a slightly curved back or whatever with the heels, and then correcting to the proper form, referencing the same bike, on a giant Android tablet in front of me, that is very helpful.
And this whole thing is sitting right there in my room as a ready to go thing whenever -- taking mini-obstacles out of the way like going to the gym, studying proper form without someone having to ape it for me, etc. are admittedly pretty trivial things -- for a lazy sack like me, having all these done and together has made a difference.
"It just works."
(Edited for grammar.)