Twenty clients a day and one empty chair costs an hour. Online booking with prepayment ends no-shows; the slot held for 30 minutes frees itself.

In a nail studio the agenda is the till. Every empty slot is money gone, so the booking page sells hours all night.
Prepayment is a setting, not a fight: the salon decides from which day ahead it is required.
14 days free. Then €5 a month plus €2 for each extra account during launch. No contract.