Colorix from Portuguese developer Awesome Software has done something few games have. They've taken the jump from the Android marketplace to the iPhone App Store. The game has been a top selling game on the Android, we'll have to see how it does on the App Store.
Colorix isn't your normal match 3 game, more in the style of Columns than Tetris with a few extra twists thrown in. It's taken to the next level. Wonderfully rendered and amazingly smooth graphics.
The game does require some extra strategy if you want to make it onto the global high scores list though. You need to know the game extras, the patterns and sequences that you get extra points for. Then you have to do the hard part and actually set up the board for those patterns. Oh yeah, and you have to keep from losing too.
Well worth a try if you are a fan of a good, casual, match-3 game. There's a good tutorial included along with local and global high scores. There's also a lite version available, give it a try.