What kind of RPGs are you into? Probably best to tell me what titles you have enjoyed in the past and I can recommend an iOS clone game. Ie "Dragon Warrior 1" = "Guardian Saga", "Bard's Tale" = "SilverSword"... and if you were into Wizardry, that is available for free... for the first two levels. Enough to see if you like the game or not.
If you were into SNES style RPGs there is Ash:
http://forums.penny-arcade.com/discu...ans-here-sorry
For a more Baldur's Gate feel, there is "Companions".
And the one I bought this morning was "Time of Heroes" which is supposed to be "Final Fantasy Tactics"-esque.