No, we don't have anything like Medium.
Related Articles
How can I contact a Leanpub author?
How do I set up my author profile?
I would like to provide people with sample chapters or a sample book of my unpublished book. How can I do this?
Getting Started Using the Leanpub API for Authors
I represent a tax exempt American / US organization. Can I submit my tax exemption form / tax exempt certificate to Leanpub, before I make a purchase?