I have Chao Ring. I'd say it's a pretty decent RPG for iPhone but I guess the hype was a bit too much because it's not really what I have expected. The game is very repetitive and u might get bored after a while from the battle system as there's not much variety other than slash, slash, slash, combo slash, (I never bothered much with skills, rather use normal attack) <- repeat. There's different scenario/story based on which Pair of characters u choose. The game is pretty short for a game this expensive, priced at 2.99 would be better IMHO.

Just my 2 cents.