Billsplitter

BillSplitter is an onchain bill splitting app built on Monad Testnet. Create a bill, everyone confirms their share from their own wallet, then settle once and the smart contract handles the split automatically, leaving a permanent onchain receipt. It solves the everyday hassle of splitting bills with friends or roommates, no more chasing people down, arguing over who paid, or doing manual math for uneven splits. Building it taught me how to design a multi-party confirmation flow where nothing settles until everyone signs off, and how to keep the UI clean while still handling the real complexity of onchain wallet interactions, all under a solo hackathon deadline.