i need a mobile app developer

I am looking for a mobile app developer We have a cricket club comprising of some friends. I want to simplify how we maintain our attendance cum fine register. some details are as follows: Total Number of members: 25 to 28 We play weekly once on Wednesday, from 10 PM to 12 PM. We take attendance on Monday from 1 PM on our whatsapp group. The first sixteen who reply yes get to play. In order to maintain discipline we have formed certain rules and fines: 1. If a person doesnt report before 9.55 PM he has to pay a fine or Rs. 100. 2. If a person says yes and then say no or doesnt turn up, then he has to pay Rs. 300. 3. If the total number of players is less then 16 on ground, the remaining players have to pay a fine of Rs. 100 4. If a person doesnt wear the team t-shirt, he has to pay a fine of Rs. 100 5. If the total number of players playing is less than 16, that group fund will contribute Rs. 1000/- towards total expenses. 6. If a person doesnt come for consecutive 3 weeks, he has to pay a fine of Rs. 1000/- Requirements: 1. Begin Count on every monday 2. Take attendance on wednesday, also note down who is not wearing t-shirt, who is late and who backed off 3. Auto calculate fine according to above rules. 4. there should be 2 levels of control, once is admin, second is assitant. 5. admin has full control 6. assitant can begin count of monday and take attendance on wednesday Thank you