Splitwise

Splitwise has been helping friends and roommates split bills since 2011. You log shared expenses, assign who's involved, and the app tracks who owes whom. It handles the math for settling up, from roommate rent splits to group trip expenses to shared subscriptions. The interface keeps everything transparent so there's no confusion about who paid for what and who needs to pay back whom.

It's not a personal budget app, but it's essential when your finances overlap with others. Splitwise prevents awkward money conversations by keeping an accurate, transparent record of shared costs. Whether you're splitting an apartment with roommates, planning a group vacation, or sharing household expenses with a partner, Splitwise removes the friction from coordinating who owes whom.