Split bills by income, not evenly.
Two incomes, one shared cost. Enter both and see what's fair, compared to a plain 50/50.
Enter both incomes and the shared cost to see the split.
Why split by income instead of 50/50
A 50/50 split treats a $2,000 earner and a $6,000 earner as if they had the same room in their budget. They don't. Splitting proportionally to income means both people give up a similar share of what they make, not the same fixed number, so the person earning less isn't carrying a heavier load relative to their paycheck.
The math
Add both incomes together to get the household total. Each person's share of the shared cost is their income divided by that total, times the cost. Earn 60% of the household income and you cover 60% of the shared costs, not half.
What counts as a shared cost
Rent, utilities, groceries, internet, insurance: anything you both use and would still need if you lived together, regardless of who spends more elsewhere. Leave out anything personal: one person's car payment, subscriptions only they use, debt from before you were together.
Track it after you split it
Once you agree on the shares, We Both gives the house one shared ledger: bills, groceries and everything else in one place, with what is left this month on every phone.