Freemium Regret on the App Store, or, too nice to monetize? (noisytyping.com)

I really like the move by noisy typing,the detail analysis shown is really helpful for developer's like me when they enter into this gaming zone. I just want raise one query here,is it better to have a lite and paid version,in order keep everybody checked?

does more free level's assure less business thru app?