User Online state
Deliver instantaneous status updates whenever user state changes for any number of connected users across related apps.
Audience count and location
Detect and update connected user counts and locations.
Battery State Notifications
Monitor device battery state, and trigger events when thresholds are met.
Trigger powerful serverless functions to run business logic whenever a user connects or disconnects.
Configure PubNub to callback to your server (or any REST API) whenever a user state changes.