Coins
Tap the "Earn coins" button at the top of the menu to get a few free coins. You will usually receive more than what could have been earned during a run. Things will begin to get fast with your free gift. You will get a lot of coins in a short period of time, however each new free gift will take longer to unlock. Collect the free gift as soon it becomes available to not lose any extra time waiting for the next one. Coins are used for getting extra balls. However, you are not guaranteed a ball when you spend your coins. Watch the cups in the mini-game. Try to point to the glass where the ball is hidden.