Nope! No contract nor commitment. You may cancer your plan at any time with no additional fees.
Under the barbershop dashboard, simply click the Manage Barbers icon, click the Invite icon, and then simply enter the desired barber's email address. They should then be able to sign up after downloading the app.
Because barbershops are filled with barbers and not customer service reps, often an unscheduled customer will walk in and not know who to speak to (because the barbers are busy cutting hair). This means losing out on a lot of business. This app was created to retain those specific customers. Rather than attempting to coordinate with all of the barbers' schedules, a customer may simply text message the phone number (provided upon signup) describing their preferred haircut, go run errands, and receive an SMS when it's their turn for a haircut.