Public vs Private Plans
Public Plans: As a free user, all of your plans are open to anyone who has a direct link to each plan or anyone who knows your username. Public plans are also findable through community pages of the site. Community pages of the site show recently updated plans and recently completed plans to give users inspiration. Public plans can be used in challenges (since these are public events) and you can also configure them to be embedded on your personal website or blog.
Private Plans: Premium users are able to choose whether some or all of their plans are private so that they are not discoverable on any part of the site. Private plans cannot be used in challenges or be embedded on a personal blog.