I installed the app on an ipad. The MTH steam loco works fine. My TMCC legacy lashup does not show up. I could not 'read' the engines (I don't think that works with the remote for TMCC, either, but I'm not sure). I added the engines manually again, then built a 4 engine TMCC legacy lashup. Would not run. Found the individual engines in the inactive list and the lashup missing. I cannot bring the engines up to the active list. At one point I was able to bring one or more up by touching and sliding the engine up to the active list, but no longer. It looks like I will have to delete the engines, add them back (for the 3rd time), then try the lashup again. In the meantime the lashup is also screwed up in the remote!
If it works (soon) as advertised, it will be great. Right now, though, I am regretting the $26 expenditure.
I have the middle version on an Android phone, but decided to throw away the $5 for that and put the premium version on the ipad due to the screen size.
On the good side, I really like the ability to rename the custom sounds! I only wish I could play them in the edit screen before I rename them so I don't have to jump back and forth in and out of that screen to remember what sound I want to name what.