I need a app for my barbershop/salon. Mainly so customers can book appointments. For Apple and android

I need a app for my barbershop/salon. Mainly so customers can book appointments.
For Apple and android

What I need for my barber app within 12 screens with interaction as well

1. Book a haircut appointment for clients
2. email reminders
3. Informative menu
4. Maintain client profiles, with appointment details, settings, and another features
5. payment processing feature
6. Offer discounts and deals
7. Premium membership maybe

How much will you charge to build this application for me and how many days would it take to complete.