Keep up with all of the Bitcoin prices. See how they have changed in the last few hours, to the last few weeks and a month. Pretty awesome if you are investing in Bitcoin.
Android: https://play.google.com/store/apps/details?id=com.kyriakosalexandrou.coinmarketcap&hl=en_US
Apple: https://itunes.apple.com/us/app/coinmarketcap-crypto-prices/id1252526626?mt=8