Yes, better messaging about premium and what it enables is on my backlog. You can view details if you click the carot in the right-side of the menubar and click "Upgrade".

Ironically, the lack of prominence of pricing is due to me hating how often apps remind you you're not paying. I didn't want it to be in everyone's face, all the time. Probably bad UX and business on my end...will fix shortly.