Dear Hiring Manager,
I hope you are doing well !
I have carefully gone through your requirements for mobile app. I am a Certified expert mobile application developer with great experience.
I have developed many similar Android and IOS application before and have expertise in the field you mentioned.
You can check our portfolio and reviews on my profile -
https://www.freelancer.com/u/ixorawebmob?w=f
I am aiming to form a long-term working relationship and glad to answer any questions you may have! Thanks.
Regards
Hey! I can develop a customized chat server for you. I would want you to discuss the details of this project in inbox so we can proceed further. Also I will show you the chat server I have previously build.