The landing copy and flow is very good. It is pretty clear what all features are available in the app from the copy. I think the Universal Inbox is a plus over Bufferapp and I'm sure the app is far more easy to use than Hootsuite.

However, just Twitter and Facebook isn't enough. Our Bufferapp account has Linkedin Pages and Google+ Pages also integrated (plus some people might want Instagram and Pinterest too!).

Good luck, I'm sure it'll be a great tool!