@OP... any particular "hard requirement" that it has to be online based? I don't dabble much with online Dom randomizers, but I too heard that they haven't really been keeping up to date either.
Being able to access iOS or Android opens up many more possibilities. FWIW, you could even buy a cheap device ($20 to $60, although on the iOS side things, such a cheap device may be too old to run them) just for that purpose.
Me, I don't use the randomizer in Jack Of All Dominion, but more so as a card reference.