You can try BitScreener, it has a really nice interface, data on everycoin is updated on a real-time basis, and everything is so easy to follow.
The app's web version: https://bitscreener.com
Download the app on App Store here: https://itunes.apple.com/us/app/crypto-tracker-by-bitscreener/id1240849311?mt=8
You can create an investment portfolio in the app and track the performance of your portfolio in total. If you're a trader, this is the one app for you!!! Good luck and have fun!!!