Stay in sync without trading phone numbers
Every activity opens a group thread the moment you RSVP — no need to swap Whatsapp. Hosts can also broadcast pinned announcements when something changes (rain, late arrival, venue swap).
Pinned host announcements
When the host posts an announcement, it pushes to everyone on the activity and pins to the top of the thread until the next one.
Per-activity group chat
One thread per activity, scoped to people who joined. Auto-archived after the event so your chat list stays clean.