Birthday dinners are supposed to be simple: the birthday person doesn't pay. But when the math gets complicated, fairness gets lost.
splitty 11 people.
$650 bill. Birthday girl pays $0.
Who covers her share? And how?
The scenario
Twelve people at a steakhouse for Sarah's birthday. The understanding is clear: Sarah doesn't pay. She orders the lobster ($65) because, well, it's her birthday. The bill arrives: $650 including tax and tip. Eleven people need to cover it, including Sarah's lobster. But here's where it gets messy: Mike ordered a $75 porterhouse. Jessica had a $22 chicken dish. Should they contribute the same amount toward Sarah's share? Split evenly, everyone pays $59. But Jessica, who ordered $22 worth of food, is now paying nearly triple her actual consumption. Meanwhile, Mike's $75 steak is effectively discounted by Jessica's contribution.
$65 birthday person's share to distribute
11 ways to split it fairly
30s to calculate with splitty
The solution
splitty handles birthday dinners elegantly. Scan the receipt. Assign items to everyone except Sarah. Her share—the $65 lobster plus proportional tax and tip—gets distributed among the 11 paying guests based on what they ordered. Mike, with his $75 steak, contributes more toward Sarah's share. Jessica, with her $22 chicken, contributes less. Fair to Sarah (she pays nothing). Fair to everyone else (contribution matches consumption).
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Never overpay again
30 seconds. Fair splits. No awkward conversations.
