I have an idea for a VoIP mobile app on Android that would provide some advanced technical features not currently available (i.e. better encryption, firewall traversal, etc.) The problem I have is no idea how to monetize this idea, or whether there is significant demand for this kind of thing.
What can I do to make an educated estimate on the size of the market for this product and calculate my expected revenue?
I too was experiencing a similar problem a few months ago.
Here are a few tips: