Hypership Out of Control Cheats for iPhone/iPad
Also on: Xbox 360
If you slide your finger left and right quickly when you're approaching clusters of coins you will be able to collect plenty and boost your multiplier.
Try and collect as many stars as you can early on in 'Coin Down' mode so you don't have to take so many risks in the later stages to pick them up.
Also on: Xbox 360, check out those pages for more help with this game.