It's still in beta, but it's not inconvenient to use,
Search steepshot
sign in with steem
Enter your steem name.
Requires a posting key.
your wallet→permissions→posting (show private key)→copy
Similar to the Instagram.
The reward system is the same.
Uploading to steepshot will automatically post to steemit.
A steepshot is automatically created in the tag.
Now enjoy steepshot.