Daniel
Daniel reviewedBrain.fmMusic for the brain to improve focus, meditation & sleep
 RecommendedPros: 

Brain.fm's "relaxed focus" is my goto for extended focus

Cons: 

Android app is still in beta, and a bit buggy

I have been using Brain.fm consistently since purchasing a lifetime membership back in January. I mainly use it during work (programming), sometimes when sleeping.

Daniel has used this product for one year.