Panic used to have an iOS app that did this. It was called Status Board, and was magnificent.
You could put it on an old iPad on an easel on your desk and watch everything from RSS feeds to ping statistics. In an office setting, you'd hook the 'Pad up to a cheap flat screen TV so everyone could see.
Sadly, Panic discontinued it when it decided to go after the video game market.
But why do you need an app where webpage is more than enough?
One more thing, if I want a webpage, I will just write plugin for this: https://github.com/netdata/netdata
It is meant as system monitor but it can chew up preatty much anything. And it is fast and lean. Really fast.