Split: Bill & Tax Calculator is the world's easiest, quickest, most powerful, and best tip calculator. Easily split the bill and share the receipt with your friends over iMessage. Choose your tip preference, but swipe left or right to adjust it quickly depending on the circumstance. See exact percentages, round totals, or round tip amounts. Tip on pre or post tax, your choice! Best of all, it's easy, free, and no ads!