We have been working on something, called Steemagram which is an Instagram clone powered by Steemit.
The sign-up and login is will be using Steem Connect V2, the likes will double as upvotes and we plan to use Steemit's comment system + flag system and possibly a wallet.
Steemagram has the same features as Instagram but we included some extras that we will talk about more later on towards its release date.
Is there any features you would like to see us incorporate into Steemagram?