Hi gav; welcome to CC.
I, like yourself also play on the ipad or iphone
mainly when out and about, on breaks etc but I play knowing it's more for fun because HUDS aren't available as far as I'm aware for mobiles..
The only real way of keeping track of your stats from the game which you played on your device is by requesting hands/games from your poker client and load them on your laptop later.
I find because when on a mobile/ipad a hud isn't really needed in general as you can only realistically play one table on those devices anyway and huds really are only needed if you intend on playing multiple tables.
IF I was you; I would just continue playing with your hud from your laptop and on your breaks, play the odd game without