I have developed the chat application which have the features of Text chat, Group chat, Video calling & video conferencing. I want to convert this application as a Skype, google hangouts, whatsapp etc to get some revenue... , can you please suggest how to convert those application as a pure commercial application to gain some revenue? Thanks in advance
First you need to develop a business model for your application. How are you going to make money, who is your customer, how much you believe you can charge per customer and what is the value they get from your application. Then you need to figure out how to acquire those customers. No one can give you a definite answer here, figuring out a business model, value proposition and customer acquisition strategy and executing on them are all crucial components every startup needs to figure out by themselves.