The spreadsheet that held up, until it didn't
A shared spreadsheet for expenses, a sticky note for the chore schedule, a group chat for reminders: it works for as long as everyone remembers to update it. A new roommate moves in, someone breaks a formula by accident, and nobody knows anymore who owes what to whom.
Consumer expense-splitting apps exist, but they stop at money: they know nothing about a chore schedule, or about rules specific to your household (say, one person covers electricity in full and gets it back through rent).
Your household, described then generated
Describe your setup: “There are four of us. I want to log shared expenses (who paid, how much, what for) and automatically know who owes what to whom. I also want a chore list that rotates between us every week, with whose turn it is.”
Blueprint Maker generates the matching application: roommates, shared expenses with their split, an automatic balance calculation between everyone, and the chore schedule with the rotation you described.
Your own way of splitting costs — equal shares by default, pro-rated, or specific rules per expense category — becomes the structure of the application, not a calculation forced by a generic tool.
- Shared expenses with who paid and who it's for
- Automatic balances: who owes what to whom
- Household chores with rotation between roommates
- Expense history by category (groceries, bills, rent)
- Overview: current balances, this week's chore
A shared tool, not one roommate's personal account
The application is reachable at its dedicated URL from each roommate's phone, without depending on the personal account of whoever set it up. One roommate moves out, another moves in: the history stays, and the application keeps going.
It belongs to the household, not to one person: the code is exportable, with no ads and no reselling of personal expense data.
Free to start
The Discovery plan (€0) generates a first complete application, often enough for a shared household. Paid plans (Pro €25/month, Max €149/month) are for evolving it further, with the cost shown before each generation.
No per-roommate subscription, no feature locked behind a premium tier: the generated application is complete from the start.
Typical generated entities
- Roommate
- Expense
- Split
- Chore
- Balance
Generated screens
- Expense list with who paid
- Balances between roommates: who owes what
- Chore schedule with rotation
- Add a shared expense
- Household dashboard
Useful indicators
- Total shared expenses this month
- Each roommate's balance
- This week's chore and who's responsible
- Expenses split by category
Frequently asked questions: roommate expense and chore tracking
Do I need technical skills to create this app?
No. You describe your household in plain language: roommates, expenses, split rules, chores: validate a plan, and the application is generated without writing code.
Does the app really calculate who owes what to whom?
Yes, if your description provides for it: each expense is linked to who paid and who it's for, and the application derives balances between roommates automatically.
Can it handle different split rules for different expenses?
Yes: describe your rules (equal shares by default, pro-rated, or special cases like a bill paid in full by one person) and they become the application's logic.
What happens when a roommate leaves and another moves in?
The application isn't tied to any one personal account: it stays at its own address, with its history. A new roommate can be added without losing anything.
Is it really free to start?
Yes: the Discovery plan generates a first application without paying. The cost of further generations is shown before launching them.