Crypto Price let's you easily monitor current prices and news from most influence crypto portals. Simple status bar popup makes things as easy as possible, just dismiss it when you don't need it. From version 2.0 you can use it in macOS 10.14 Mojave dark mode.

It supports more than 1600 crypto currencies and 95 national currencies for easy compare. Arrows in status bar indicates changes when some of your currencies grow or fall and it will automatically refresh prices while the app is in background.
Notifications in notification center will keep you posted when new news arrives.

Credits for currency prices and news goes to CryptoCompare team.