Hello,
I have gone through your requirement and understand that you are looking for an expert to assist you with the current chat app.
I am lead iOS developer at HCL and currently working on an iOS app of Manchester United.
If you can share the detail I would definitely like to help you with all your queries and issues.
I would like to discuss the project with you. Please initiate chat soon so that we can discuss the project in more details.
Looking forward to a positive response.
Regards,
Ishika G.