Expenses can get pretty confusing if each roommate is paying a different utility or amount of rent. The math can get difficult, expense amounts can be forgotten, and determining the best way to pay each other back isn't easy. The key to a great relationship between all roommates is to keep track of how much each roommate has paid and continue to communicate who has overpaid and who has underpaid their fair share of the bills. The solution, use a roommate expense tracker to track the expenses and calculate all the math for you. If you have an Android phone, view the app here. It will make roommate life a lot easier and prevent unnecessary arguments over money. If you don't have an Android phone, browse the web. An app or program that has these features is defiantly a necessity.