TIP Pro, The fastest, easiest, most entertaining way to calculate tips. Make paying your tab fun for you and your friends and demonstrate the features of your iPhone. TIP Pro automatically calculates the amount of your bill and adds the tip you would like to include. Instantly splits the check for up to nine guests. And plays a hilarious sound clip to make it fun for everyone. The last transaction is easily recalled for entering into a budget tracker or accounting program at a latter time.