Nobody moves in with people and thinks "I cannot wait to be the one who keeps a spreadsheet." But somebody always ends up being that person. And that person slowly turns into the house accountant, the chore nag and the one who notices we are out of bin bags again.
It is almost never a personality problem. It is an admin problem. Four people paying different amounts on different days for different things, with the only shared record being a group chat that scrolls away by Thursday.
So we built households into Cohabital. Once you are actually living with people, you can set up a household with them and the boring part mostly runs itself.
Costs, split the way they were actually paid
Every household member has a share. A share of 1 is an equal split. If someone took the big room with the ensuite, give them 1.5 and they carry 1.5 times their portion of anything you split proportionally. Rent might be proportional while the internet bill is dead equal, and you can choose per expense.
Then it is just: who paid, how much, and what for. Cohabital tracks what each person paid against what they actually owe, and tells you the net.
Two details we cared about a lot here.
The first is pennies. If you split $100.01 three ways, most apps quietly hand everyone $33.34 and invent a cent out of nowhere, or round down and lose one. Ours allocates the remainder to whoever got rounded hardest, so the parts add up to the total exactly, every time. Over a year of groceries that difference is the reason a ledger either balances or becomes something nobody trusts.
The second is settling up. Instead of everyone paying everyone, Cohabital works out the fewest payments that clear the whole house. Three people usually settle in two transfers. When someone actually sends the money, hit Mark paid and the balances go to zero. A settle up plan you cannot tick off is just advice.
Chores that reassign themselves
Chore charts die for one reason. Somebody has to keep updating them. By week three the whiteboard is a historical document.
So a recurring chore in Cohabital is never finished. Tick it off and the due date rolls forward on its own, and if you turned on rotation it goes straight to the next housemate. Set up "take the bins out" once and it keeps working for a year without anyone touching it.
If a chore is due or overdue we send one nudge to whoever it is assigned to, then leave them alone for a few days before mentioning it again. A reminder that shows up every single morning is not a reminder, it is something you learn to ignore. Chores that nobody has claimed get flagged to the whole house instead, because those are the ones that quietly rot.
There is also a running count of who has done what in the last 30 days. Not to start fights. Mostly it ends them, because "I do everything around here" is a much shorter conversation when there is a number attached.
A shopping list that feeds the ledger
This is the one that surprised us. Every house already has a shopping list somewhere, usually a note on the fridge or a message someone sent at 11pm. The problem is that it never connects to the money, so whoever buys the paper towels either eats the cost or has to go type it into something else later.
On Cohabital, anyone can add to the list. When you buy something, you tick it off and drop the price in. That is it. It becomes a shared household expense in the consumables category, split by share, credited to you.
Leave the price blank if it was two pounds of nothing and you genuinely do not care. The point is that it takes the same three seconds either way.
One chat where the money actually shows up
Every household gets its own group chat, which sounds unremarkable until you see what is in it. Expenses, payments, completed chores and shopping runs all post into the same timeline as the conversation.
That matters because the argument and the answer normally live in two different apps. Someone asks who paid for the internet in a group chat that has no idea, while the receipt sits in a payment app nobody opens. Here you scroll up and it is right there in order.
We also went out of our way not to make it annoying. If you are already caught up, a new message pings you once. If you have not read the thread yet, it does not ping you again for every follow up. Group chats that email everybody on every line get muted, and a muted chat is a dead one.
Why this lives inside Cohabital
Plenty of apps split bills. Plenty split chores. What none of them know is who these people are to each other.
Cohabital already handles the part before the lease: finding people, checking they are who they say they are with ID verification, seeing how you are connected through people you both know, and matching on the things that actually cause friction like sleep schedules, pets and smoking. A household is just what happens next. You can only add someone you are connected with, because a household is a shared money ledger and not a public group.
So the trust you built while searching carries into the year you spend living together, instead of getting dropped at the door along with a link to a spreadsheet.
Setting one up
From your dashboard, open Households and create one. Name it, add the address if you want it (it stays private), then invite your housemates from your connections. Set your shares, add your first expense, and you are running.
It is free, like everything else on Cohabital right now.
Set up your household or find the people to share it with first.
