The Math How It Works Join Waitlist

Private beta — launching soon

Split bills.
Stay fair.

CoBills splits shared bills three ways — by income ratio, 50/50, or custom percentage. Pick the mode that fits each bill, and skip the awkward money math.

Same rent, three ways to split fair.

Alex earns $4,800/mo. Sam earns $3,200/mo. Rent is $2,400. Pick the split mode that feels fair for the bill.

Alex pays $1,44060%
Sam pays $96040%

Proportional to take-home pay — the mode that matters when incomes don't match, so nobody has to argue what's fair.

Get started in three
simple steps

Create your household

Sign up and invite your partner or roommates to join your household with a simple invite code.

Add your bills

Enter shared expenses like rent, groceries, utilities, subscriptions, and more.

Stop tracking in your heads

CoBills runs the totals. Both of you see the same numbers — settled or pending — without a single "did you pay me back?" text.

Be first when CoBills opens.

Join the waitlist for early access. We'll only email when the app is ready — no marketing, no drip, no pressure.

Join the Waitlist