I mostly use coinmarketcap when on laptop, otherwise from phone i just use a telegram bot on phone to know about the current prices of any coin.
I also use coinmarketcap on my laptop, it is very simple and fast to use. some of my coins are not listed on coinmarketcap, for those I'm going to etherdelta to check current price. On my mobile phone, I'Ve started to use blockfolio but app needs a lot of improvement.