The only app you really need to keep track of you portfolios price and any other coins you want to keep an eye on is blockfolio. It ticks all the boxes and i think its even got a news section so you can see all the latest posts from cointelegraph and coindesk. Do you need more than that??
+1 for blockfolio. I use both the app and the web version and i am a happy camper. However, if you are looking for something else, i also suggest using altcoinpocket. The user interface is really simple and it supports not only the popular coins but even small and minor erc20 tokens as well.
I think that OP should be satisfied with this answers, and he will find out which one is more suitable for him.