How much would it cost to create a Twitter clone? You won't believe how often I hear this or similar questions. There is no such thing as a realistic estimate of a software price if we are talking about a more or less big product. It starts with a few thousand dollars and ends with a few billion if the product becomes successful on the market. Those who tell you that to develop your app would cost, say, $100,000 are just trying to fool you or they don't understand what they are talking about.

The video is here: https://youtu.be/j5uXrY2gttA