This is one of the features that I find most exciting. The Community section is like a message board or forum, and it'll be your one-stop shop for motivation and accountability. Instead of having to exit the app and join a group on social media, or log in to a website to post a question, it's all built into the app. Plus, the interface is seriously clever.
First, there are clear conversation categories so you know where to post your question or find people doing the same program you are. Then, all of the conversations look like a text message, so it feels a bit less daunting than posting to a website, or from your personal social media account. Of course, you don't have to join the conversation if you don't want to, but it's there if you decide you need it.