We are certainly not going to port Fitaly on all the platforms you mention. Porting Fitaly to another platform, meeting the quality we like to offer, is a big task. And while Fitaly is very popular amongst its current users, one has to realize that it is a small community. Textware has not made $$$ with Fitaly since the PalmPilot.
So you have to understand that we are not going frenzy developping Fitaly for all the platforms out there. However, if we decide to port Fitaly to another platform, as of today, I would say Android is the most likely target.