If you have 4M users and $350k in advertisement revenue why are you applying for the fellowship? As well most things related to just making free phone calls hav

If you have 4M users and $350k in advertisement revenue why are you applying for the fellowship? As well most things related to just making free phone calls have been done previously many times over. I would add something like free video calling made easy. Or if someone who does not know how to use a computer or a smart phone, and your product can help them make video calls with ease.