It began because nobody could answer one question.

It did not start as a company. It started as a spreadsheet, built to answer that one question honestly, for a household with accounts in two countries and money in three currencies.

Getting to a figure worth trusting took more than a list of expenses. It took an income statement, a balance sheet, a strict line between spending money and simply moving it, and the discipline of checking against real bank balances every month. The file grew to fifty tabs and ran a household for five years.

It became an app because a spreadsheet cannot be two people at once. One person logging a coffee from a phone while the other checks the mortgage on a laptop is not something fifty tabs of formulas will ever do well.

Everything published here comes out of that ledger. Five years of continuous, reconciled data, including the categories that were wrong for two years and the habits that finally made the figures trustworthy.