The math doesn't add up. How can you generate 50$ per day when you only have +10 downloads? 
Yes .You can earn more when we increase the user. For now, he earns 10-15 USD per day. I work with 13 advertising companies.
My second question :
From where & how does the users using the faucet receice bitcoin as I can not see any fund backing?
Who earns 10-15 USD per day? You or the user using faucet? According to me, both can't earn that amount per day considering the current conditions.