The document describes features for a tighter application design including a calendar, sidebar tabs, and adding, attending, exploring events, finding free dates, and settings. The add feature allows scheduling appointments visible to all. The "I'm Going" feature allows checking into places and events and seeing who wants to attend. The "What's Going On" feature recommends local events and specials. The "Free Dates" feature compiles when all users are available. The settings allow customizing calendar views and notifications.