For example, if logged in to Workflowy, workflowy.com leads you straight to the app.
On the other hand, if logged in to Asana, asana.com leads you to the home page regardless. Clicking "Log In" logs you in without verification. Also, app.asana.com leads you straight to the app page.
Is there a reason to prefer one of over the other? What are some advantages of one over the other, short of the extra step to reach, respectively, the homepage or app.