My experience yesterday was mixed.
I was trying to get it going properly for about an hour before I gave up and went to CW. But then I realised my main mistake (rig on 20m, antenna set for 30m - oops!) and spent another hour trying again. I think I finally heard a reply to a CQ, only for him to fade away (a G). But I did finally achieve a few QSOs around Europe and was heard as far away as Brazil.
Trying to use Windows on an 8-inch tablet is horrible.