RoomRatio

RoomRatio does one thing: it splits rent fairly across roommates and shows exactly how it arrived at each number. Pick a method, room quality, income, equal, or manual percentage, and it returns each person’s share along with the formula behind it, with no signup required to get a usable result.

Who it’s for

Roommates, couples, or anyone in a shared rental who wants a rent split that’s defensible rather than guessed at. If the argument in your house is “why do I pay more for a smaller room” or “should rent scale with income,” this gives you a formula-backed answer instead of a vibes-based one.

It’s not built for trip expenses, restaurant bills, personal budgeting, banking, landlord property management, or anything requiring a legally binding agreement. It stays deliberately narrow to shared-home rent and the recurring payments that go with it.

What it actually does well

The formula transparency is the core trust mechanic. Every result shows its math, rent times room points divided by total points, rather than a black-box number you’re supposed to accept. For a tool whose entire job is preventing an argument, showing the work is the right call.

Keeping raw income out of share links while still supporting income-based splitting is a genuinely well-thought-out privacy boundary. Roommates can see their own share amount without seeing what everyone else earns, and income only gets stored with explicit consent if the household saves the agreement.

The scope discipline extends past rent. Bills and one-off costs get their own split basis separate from the recurring rent rule, which matches how shared households actually handle money, rent isn’t bills, and bills aren’t a broken appliance everyone chips in for.

Where it gets awkward

Pricing is undefined past “free during early access, low prices later,” so there’s no way to know what a paid tier will cost or gate once it launches. Fine for now, worth checking back on before recommending it as a long-term household tool.

This also isn’t a full expense-splitting app. If your household wants to track shared groceries, trip costs, or anything outside rent and recurring bills, you’ll need a second tool alongside it.

How it compares

Against general debt-splitting apps like Splitwise, RoomRatio’s edge is depth on one specific problem. Splitwise treats every expense the same; RoomRatio treats rent, bills, and one-off costs as fundamentally different splits with different logic, which matches how shared housing actually works.

Against doing this in a spreadsheet, the advantage is the shareable, income-private summary and the recurring monthly workflow. A spreadsheet can do the math, but it won’t keep one roommate’s salary invisible to the others while still using it in the calculation.