I can create, implement and install a complete game server for your mobile app (Android and iOS both). I have a great experience in working with game server development. The server can be used for complete game logic, chat application, request-responses or broadcasting as well.
I have implemented game server for multiplayer games with all basic and extreme features as well. If you need only a chat application then you can also place an order for the same. Other than that I offer full implementation of a game.
The basic service does not include the complete game development. We need to discuss the requirements on the message conversation.
The server include the back-end as well as front-end for your view as well. The front end can be used for dashboard access to admin user. The server can interact with all existing game engine for mobile app development such as Unity Engine etc.
The server script will be written in NodeJs programming language with combination of mongo database.