Larry from Blockstack here.

We're really focused on improving the on-boarding process for users who are new to the Blockstack ecosystem so it only takes on a few seconds for users to get started with a Blockstack app instead of immediately asking users to download and install the Blockstack Browser.

There's a bit of a discussion about how this will work on mobile here: https://forum.blockstack.org/t/blockstack-mobile-plans/3621/...

We want to really reduce the friction of on-boarding new users to amazing apps like Graphite.