There's also a referrals app mentioned on the new-app page that's called Point. I wonder if this has anything to do with another Microsoft Garage incubator app that was called "Home Team." The Garage page lists Home Team as "experiment complete." The description of the app: "Home Team enables users to get and share word of mouth recommendations for service professionals (plumber, electrician, stylist, dog walker, etc.)."
The "Sign Up" button for all these apps takes users to a page to sign up for a free trial of Office 365 Business Premium. That service is Microsoft's most comprehensive Office 365 subscription plan for small businesses. It costs $15 per user per month if paid monthly, or $12.50 per user per month if paid annually. It includes the full set of locally-installable Office applications for up to five PCs and/or Macs per user, as well as Exchange Online, Skype for Business Online, SharePoint Online, Yammer enterprise social-networking, and 1 TB of OneDrive for Business cloud storage.