I think this is a totally waste of time. I read also a lot of app's about mining on phone but %90 of them are scam. The other ones can pay but i think its not worth to try because i just quick looked a program in appstore and it pays 0.03 cent btc per hour

0.03 cent btc per hour, seriosly?

Even if I have an old unnecessary phone, it does not even pay for the electricity that it consumes. Seriously, who needs it, what's the point?
Maybe there is some kind of special coin that can only mining on smartphones, otherwise it's just a waste of time.