Sharing a single page in the free tier

As a PM it looks like a very useful quick and dirty wireframing tool to me. I'm in a small startup and want to use the free tier for now to evaluate it. but if i can't share even a single page to view with for example our UX designer without forcing her to register (She's outsource and we're not her only customer) i can't find it useful for me right now. Sticking with adobe comp for now