Yeah, the demo and full version has the exact same content, just with export disabled. If you're unsure about supporting us, I suggest to just follow our account (and maybe Twitter) for now. More content will be added, of course, as this project is still in early access phase. We usually update significant progress in our Twitter account periodically, and follow up with a longer story in our Devlog here.
We're currently working towards a big-ish update which includes new content for NaNoRenO (March), so you might want to wait until that time if you're unsure.
Thanks for your interest!