One correction probably will need to be made: cryptocurrency is called Steem (http://steem.io/).

Steemit is just one of many platform build on top of this blockchain. There are alternatives like:

• http://busy.org/ (different look&feel for Steem Network, check your profile there
• http://mapala.net/ (they want to focus on travels)
• https://steemdb.com/forums - Steem Forum Interface (prototype) by @jesta - read more

and few others for mobile ;)

But of course Steemit was the first one and by many it is considered as the official one.

PS.
Somewhere in the Roadmap for 2017 there was something about creating more distinction between Steem (the blockchain) and Steemit (website) - for example... right now both are using the same logo. That is going to change.