I usually download from this site. Hope that it is helpful for you. 

To be honest, I just browse Google Play store. I'm mostly looking if the apps I have that have Pro versions are in sale, would love to buy those to support the devs.

How do you know when google play is on sale? I see http://appnaz.com to be a real-update web 

I haven't tried it yet. I just check Google Play store once in a while if the apps I want is on sale.

What do you think about http://appnaz.com ? Have you had experience with it? I founf it yesterday and i think it is rather good with either ios and android. Maby i will try downloading something from it once

Did a quick Google search and found these websites that show app sale for iOS and Android: Link 1, Link 2, Link 3

Hope that helps!