DormShare

DormShare is an offline iOS app that helps students and roommates living
together fairly split shared water, electricity, and other household bills. You add roommates once, then for every bill you pick the participants and the app instantly calculates each person's share, either evenly or by custom ratios you set. Built-in usage timers let you track how long the air
conditioner, water heater, or washing machine actually runs, estimate the cost at a per-hour rate, and turn that result into a bill with one tap that
already remembers who was using it. Monthly charts, per-roommate balances, and unpaid totals are drawn natively so you always see who owes what and who has settled.

Unlike generic expense splitters and templated bookkeeping apps that treat
every group the same, DormShare is built specifically for dorm and
shared-housing life. It maps to the real situations students face: usage-based appliance tracking tied to a specific roommate, per-person settled status on every bill, water-versus-electricity breakdowns, filtering bills by roommate or month, and instant local export to share with the people you live with. Deleting a roommate cleans up every related bill and timer automatically, so historical records stay trustworthy.

It solves the awkward dorm problem of unfair, untracked utility costs and
forgotten payments between roommates. No accounts, no subscriptions, no ads, no network requests. Every record lives only on your device.