I did find two apps that I downloaded, one is a dictionary app, (it's not the best compared to the sites you linked me too, but it does have phrases where the words are used), and an app called German grammar in use, that one goes through different things like verbs, sentence structure, just different grammar things, so that'll help. There is one more I'm thinking of downloading which is called German Listening, that one will has articles you can read and hear being read to you, plus you can make your own dictionary/flashcards, and if you don't understand a word in the article all you have to do is click on it for the translation. Looks like a good app, but may wait a bit to download it as it's above my abilities right now. Atleast there are apps out there that can help you learn a language.