Their are so many sites i think which are supporting Ipad and smartphones as now adays their are so many users who are preferring to use phones for gambling, but i dont prefer to user mobile devices to play gambling as it is not reliable if the mobile software get corrupted then we dont have access to the wallet anyway so it is highly risky.
In my experience its not to good to gamble in mobile its small view unlike in laptops or desktop so also me i dont recommend it sometimes the site is buggy and you will not notice that your balance was drain..
Where did you see those bugs?
So far I have had no problems while playing with the mobile version of any online casino.
there are a lot of differences between the devices you use (phone, tablet,...), is it android,.... , the browser you use and a lot of other stuff.
so you can't really give a general reply to this question. and i think the best way to find this out is if OP tries them out himself.