Live together. Skip the math.
Internet, electricity, that mystery bottle of olive oil. Living together gets easier when the math is automatic — and the kitchen accusations are fewer.
No credit card required. Whose turn it is to clean is still your problem.
Three people, one apartment, and a kitchen drawer full of receipts. Someone buys toilet paper, someone replaces the dish soap, someone orders pizza on a Friday, and none of it feels big enough to mention.
So it goes on the whiteboard on the fridge, or into a group chat full of “I’ll send it to you later”. The whiteboard gets wiped by accident, and the chat scrolls past the message nobody answered. A month later, somebody feels like they buy all the toilet paper, and they might be right.
The small stuff adds up
No single thing feels worth bringing up. A pack of sponges, a jumbo pack of toilet paper, a new shower curtain because the old one started growing something. Each one is a few dollars, so whoever notices first just buys it.
Then add up a month. In the example below, three roommates spent $453 on shared stuff: two big shopping runs ($186 and $147), $42 of cleaning supplies, a $24 shower curtain and a $54 pizza night. That is about $150 each, paid in small pieces by whoever happened to be at the store. Nobody is cheating. Nobody can keep that in their head either.
What to share, and what to keep to yourself
Our rule: share what everyone uses without thinking. Toilet paper, dish soap, trash bags, cleaning supplies, salt, oil, the coffee everyone drinks. Also the things that belong to the apartment, like a shower curtain or a new pan. Splitting these three ways beats taking turns, because turns never come out even.
Keep your own food your own. If you drink oat milk and nobody else does, that is your oat milk. Same for shampoo, snacks with your name on them, and anything one person uses far more than the rest. A big purchase like a shared couch deserves a quick talk first: who keeps it when someone moves out? Rent and utilities have their own math, and we cover them on the rent page.
When someone skips the pizza night
Friday, two of you order pizza. The third one is at a friend’s place and finds out from the empty box. If the $54 goes into the shared pile, she pays $18 for pizza she never saw, and next month she will remember it.
So keep it out of the pile. A cost belongs to whoever was there. In The One Bill each expense has its own list of people: tap the two who ate, and the pizza splits between them. The groceries stay three ways, the pizza goes two ways, and nobody has to argue about a slice.
One running bill a month with The One Bill
Start one bill on the first of the month and share the link in the apartment chat with edit access. Whoever buys something snaps the receipt or types the amount, picks who paid and taps who it was for. The bill fills up as the month goes and everyone can check it anytime, so nobody has to be the one who asks.
At the end of the month, The One Bill shows each person’s balance and the payments that settle it. Below, Nina paid $186 and Omar paid $201 (a shopping run plus the pizza), while Priya paid $66. That leaves Nina $26 ahead, Omar $41 ahead and Priya $67 behind, so two payments close the month: Priya sends Omar $41 and Nina $26. Pay each other back however you like: The One Bill keeps track of who owes what, it never touches the money. Then start next month’s bill.
Three roommates, one month, $453
Two shopping runs ($186 and $147), cleaning supplies ($42) and a shower curtain ($24) are split three ways, $133 each. Nina and Omar shared the $54 pizza night ($27 each); Priya was out.
| Person | Shared by all three | Pizza night | Total |
|---|---|---|---|
| NinaWas at pizza night | $133.00 | $27.00 | $160.00 |
| OmarWas at pizza night | $133.00 | $27.00 | $160.00 |
| PriyaMissed pizza night | $133.00 | $0.00 | $133.00 |
| Everyone | $399.00 | $54.00 | $453.00 |
Split everything evenly and everyone pays $151, so Priya chips in $18 for pizza she never ate. Split by who was there, she doesn’t.
Try one receipt. Watch the split come to life.
Snap a receipt and let our AI turn it into a fair, item-by-item split — no typing, no receipt detective work, and no making the salad friend pay for the lobster.
Snap the evidence
Restaurant check, grocery haul, party supplies — take one clear photo before the receipt vanishes into a pocket forever.
Hand it to the AI scribe
Upload the photo and our AI reads the receipt, finds the line items, and turns that crumpled paper trail into a tidy list.
Put every bite where it belongs
Tap the person who had each item — or choose two when they shared. The One Bill divides every line fairly and keeps the final tally clear.
That's it: photo in, fair split out. Snap the receipt and let it do the typing.
Enjoy your friends.
Stop worrying about the bills.
From taco nights to month-long trips, every shared expense fits right in.
I used to lose friends over twelve bucks. Now I lose them for completely unrelated reasons.
Jack Hard Rock
Beer Drinking Legend
