I want to build an app and website which will connect athletes with coaches and vise versa. The idea is that athletes and coaches can upload their profile details. Coaches and players can see the profiles of players and coaches (not the last name but the first letter only), respectively, but they will not be able to contact each other unless the interested party pays for a premium account. The list of details the players can provide will be limited for a free account. Additional details will be for premium account. The app needs to have an in-app chat/messaging 1. Authentication: email/password 2. Payment Integration For premium accounts: credit card and PayPal, iDeal. 3. Specific fields should athletes provide a. for Basic (free) account: Name, last name (only first letter will be presented to coach unless premium account), date of birth, player position, left/right footed, current city, current country, current club, current level the player plays at; profile photo + option to upload max 1 additional photo ; b. for premium (paid): current club, previous clubs, ability to upload additional 5 photos and maximum 2 videos of X MB each, achievements, certifications, detailed stats from previous years. 4. Specific fields should trainer/coach provide for Basic (free) account: a. Name, last name (only first letter will be presented to player unless premium account), date of birth, experience in terms of years; education; profile photo + option to upload max 1 additional photo ; b. for premium (paid): current club, previous clubs, ability to upload additional 5 photos and maximum 2 videos of X MB each, achievements, certifications, detailed stats from previous years.