Free for the web, iPhone, and Android, Splitwise is the most versatile of all the bill-splitting apps on our list and fits most situations where you need to split costs between multiple people. You can create groups with various friends and divide up what each person owes. All your shared expenses and IOUs are organized in one place and everyone in the group can see the amount they owe.

The app tracks borrowing and lending over time. And, until the balance is settled up, each person’s outstanding balance may go up and down. Splitwise sends reminders at the end of the month so everyone can pay what they owe and go into a new month with a fresh start. On the homepage, you’ll find a tally of the amount you owe and you can settle your balance at any time – you don’t have to wait until the end of the month. Payments can be settled with Paypal or Venmo directly from the app, or if the person who owes you pays in cash, you can record a cash payment to clear up the outstanding balance.