SplitBook

SplitBook makes it easy for households to track shared expenses, split costs fairly, and settle up — all synced across everyone's devices through iCloud. No accounts to create, no subscriptions. Add your household members, start logging expenses, and let SplitBook handle the math. FLEXIBLE SPLITTING • Split equally among everyone checked, payer included • "For members" when you paid for someone else's share • By exact amounts when shares aren't even — with built-in math (+, −, ×, ÷) to add up a restaurant bill on the fly • Or keep an expense as the payer's own • Vendor suggestions remember where you shop and the category you used last time SEE WHERE YOUR HOUSEHOLD STANDS • Plain-English balances: who owes whom, at a glance • Recent activity for expenses and payments • Spending by category, from this month to all time SETTLE UP • Record payments between members and apply them to specific expenses • Expenses show when they're partially or fully settled, with a clear trail SHARE WITH YOUR HOUSEHOLD • Invite family or roommates through Messages or Mail — only the people you invite can join • Changes sync automatically through iCloud • Works offline and catches up when you reconnect • The owner decides who can add new members, and can stop sharing anytime MAKE IT YOURS • Custom categories with your choice of icon • Optional notifications when someone adds an expense or payment, or joins • Light, Dark, or system appearance • Backup and restore your whole household to a file PRIVATE BY ARCHITECTURE Your data lives on your device and syncs only through your personal iCloud and the household members you invite. No third-party servers, no analytics, no tracking, no accounts. Your finances stay between you and your household. SplitBook is a ledger: it tracks who owes whom, but it doesn't move money. Questions or feedback: splitbook@mentalhygienist.app