TomoApp is the first app using Tomocoin, only TomoApp is similar to steemit. Tomocoin and its blockchain network (tomochain) is supposedly innovative solution scalability issue in Ethereum.  It does so by using POA that allows instant confirmation (2 secs !) and near zero transaction fee. 

Also it has atomic cross chain transaction and support for ERC20 which make it a really good substitution that that in Ethereum for dapp, ICO, etc... see https://tomocoin.io/ for more about it