Ask her what she does and she won't say "software founder". She'll say she turns the light on in the room where the money lives. Countam — her accounting platform for businesses doing ₦50m to ₦5bn a year — is that light switch: sales, expenses, inventory, payroll and tax, one honest dashboard, every module on every plan.

The philosophy is disarmingly domestic: books should be kept the way a good house is kept — daily, calmly, with nothing shoved under the bed. "Numbers are only frightening before you look at them," she says, in the tone of a woman who has looked at a great many.