The day's total
An expense is recorded the day the money leaves: rent, a bill, a moto, a restock. Cash taken from the drawer, or MoMo.
Categories that mean something
Restock, transport, power, rent, wages, supplies, repairs. Not a pile of “misc” to untangle next month.
Profit, not only takings
The day's takings minus these outflows is what is left. Wages paid in payroll arrive here on their own, so you neither count them twice nor forget them.
There is no self-signup. Request a setup and the categories are there from the first morning.