The difference between our Solo and Studio plan is that our Solo plan comes with one user while our Studio plan comes with 5 users.
The Studio plan comes with unlimited premium canvases with no time limitations and many other features such as private commenting, comment attachments, User mentions, the ability to pause commenting on canvases and schedule deadlines, exporting to Trello, Asana, Jira, a customized webhook, Zapier, etc, and many other features.