Property and expense clarity

Know what was used, what it cost, and what happens next

Track personal spending, manage rental properties, and calculate monthly utility bills in one clear workspace — for one home or several.

Works in the browser and on your phone. Your data stays in your account.

Product previewExample data
Rental workspaceGedimino Ave. apartment
Saved

This month

€48.35

2 metered · 1 fixed

Bills and readings

  • ElectricityMetered
    Previous
    1,842 kWh
    Current
    1,910 kWh
    Usage
    68 kWh
    Amount€15.57
  • Cold waterMetered
    Previous
    126.442
    Current
    131.78
    Usage
    5.338
    Amount€9.88
  • InternetFixed amount
    Fixed amount
    Amount€22.90

Who it's for

One account, several ways to use it. Pick a starting point — you can add others at any time.

  • Personal use

    Track your household spending and utility bills in one clear place.

  • Landlords

    Manage several rental properties, invite tenants, and track payment status.

  • Tenants

    Submit meter readings and see a transparent, explained monthly bill.

  • Business

    Track monthly expenses and budgets across several locations separately.

This is a starting experience, not a permanent account type. The same account can be a landlord on one property, a tenant on another, or belong to a business workspace.

Everything a month of accounting needs

Built for real use — a household, a rental, or several properties.

  • Metered calculation

    Enter the previous and current meter reading plus the unit price — usage and amount are calculated instantly. Electricity, gas, cold and hot water.

  • Fixed and recurring charges

    Building maintenance, waste collection, internet — set the amount once and it appears every month until you give it an end date.

  • Yearly summary and chart

    See how spending moves across the year, which months cost the most, and how much is already settled.

  • Readings roll forwardThis month's reading automatically becomes next month's starting point, including the December-to-January rollover.
  • Backup and CSV exportExport the whole ledger as JSON or the current month as CSV.
  • Several properties and membersManaging several properties or clients? Each one is calculated on its own.

Three steps to your first summary

  1. Create an account

    An email address and a password is all it takes.

  2. Add a property and its bills

    Set up meters, fixed charges, or simply your household's own expenses.

  3. Enter readings each month

    The total is calculated for you, and the history builds up into the yearly summary.

Secure, and clearly controlled

Everyone only ever sees what they've been given access to.

  • Role-based access

    Each user only sees the properties and data they've been given access to.

  • Secure, encrypted connection

    Sign-in is protected, and every connection between your browser and the server is encrypted.

  • Private by design

    Your data is never sold or used for advertising.

BETA

Free during beta

Every feature is free to use right now. If we introduce paid plans later, we'll announce pricing and changes in advance — existing accounts won't be changed without notice.

Create an account

Frequently asked questions

Is it free?

The ledger is currently free to use while the product is in beta. A payments module is still being built — any change will be announced in advance.

Where is my data stored?

In your account, in a database protected by Row Level Security. Each user can only reach their own ledger — that is enforced by the database itself, not just by the interface.

Can a landlord and tenant share the same property?

Yes. Each uses their own account, but sees the same property according to their role — a tenant sees the bills for their own period, a landlord sees everything.

Does it work for a business with several locations?

Yes. Within one workspace you can track monthly expenses for several locations separately.

Does it work on a phone?

Yes. On small screens each bill is shown as its own card with every field visible, so there is no sideways scrolling. It can also be installed to the home screen as a PWA.

What if a meter was replaced?

Enter the new meter's starting value in the previous-reading field and the calculation continues from there.

Can I bring my spreadsheet across?

You can import a JSON backup exported from the app. There is no direct Excel import yet, but months can be entered by hand.

Which languages are supported?

Lithuanian and English. You can switch at any time — amounts and dates are formatted for the language you pick.

Start with this month

Create an account and enter your first numbers in a few minutes — whether it's a household, a rental, or a business.

Create an account
Property, expense and bill tracking | Bonnau Studio