Expensure is a web and mobile-based service that helps people track, manage and resolve their shared flat/travel bills and expenses.
Users set up a ledger for their household or holiday and add their shared purchases and repayments to it. The service has a Circular Debt Resolution™ algorithm that resolves these shared debts for you by looking at who you owe money to, who owes you money, and what money these other people owe to each other. The algorithm then groups all of these transactions together and works out which debts cancel each other out, and what is the simplest way to clear any outstanding amounts using the least number of transactions within a group of people; so that it’s never the case that money goes from hand to hand in a circle.
Expensure also has collaborative shopping/supply lists to add all of your flat/traval necessities to, which is extremely useful when planning a trip abroad or even just to a local supermarket; helping your household or holiday run more smoothly.