Hi, Kaylin.
Thanks for your interest in our plugin suite.
Each event has oEmbed support. However, the entire calendar is not available via oEmbed or via iframe like you asked. This could be made possible would require pretty extensive customization to detect when it’s being loaded via iframe and then hide all other things on the page so it acts like it’s simply an events calendar getting iframed.
None of what I mentioned above requires a paid add-on, just the free/core The Events Calendar, but if you are interested in one of our paid add-ons… we have a pretty great Refund Policy so you can buy one or many of our add-ons and thoroughly test them.
Let me know if you have any follow-up questions.