This is pretty much par for the course in the world of mobile apps. You really think that all 5 bajillion iOS apps are great? I've spoken with people who have iOS and Android devices and they've said that that with the sheer number of apps out there, it's more and more difficult to find something useful. Unless you already know what you want, there can be no discovery of new kinds of apps without relying on "top 10" posts or featured apps.