Well some small differences:
- on PS1 I redid the GUI, but didn't touch the ending romances since there's really nothing particularly sexy
- on Heileen 3 I only put panties to Heileen in Sebastian's ending
- on Loren, I used the covered romances like for Steam, and you can't pick the spell/skill level (will use the higher one automatically). I had to do that because otherwise the buttons were too small
but that's it, the rest is the same. Anyway iOS uses the in-app purchase so you can play the games for quite some time to see the GUI changes.