Freezing Fat Free Yoghurts

I was just wondering if I can still count these as no syns? I know if you cook fruit you have to syn so I'm just wondering if this is the same idea?
Probably a stupid question but I'd rather be safe than sorry!

Yeah you still do not have to count them as syns x

Yay, that's great! I had one on the weekend when the everyone else had ice cream.