When we as a developer try to develop an app for the first time we all face the same Question; “What is your monetization model for the product you are working on ?”, and normally we reply with “No, I am trying to help people I don’t want money. I’ll think about it later”. But the fact is, we are infatuated by reality of company acquisition for millions/billions of dollar for apps like WhatsApp, Viber, Instagram etc.