Does anyone know any good react-native booking library for scheduling appointment sessions, where a client can check for availability and book the day and time of service session?
I don’t, but it’s a very painful area. I had a similar problem, and ended up rigging it up using a calendar API. It’s a very messy area that can suck up all your time for the next month especially when you consider different time zones, day-light savings time, leap years, etc.
It is quite a difficult area and there isn't much help online.