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It's very easy to integrate and tracks every user events, you get real-time updates. A must have tool on your site to track down bugs and make the user experience better.
Pro Event telemetry
Shows console, network, routing and user events like clicks/inputs that occurred before the error that makes it possible to recreate it in development.
Pro AJAX errors
Helps you know when the API call is failing so that you can quicky get to it.
Allows integrating various notification channels like Slack, Hipchat & Email. Notifies whenever there's a new error or a resolved error appears again.
Pro Network performance monitoring
AJAX monitoring shows which calls are running slow and how many calls the app is making to the backend.
Pro Page load performance monitoring
Monitors page load performance along with the breakdown like Query stalling, SSL, TCP Handshake etc.
Pro Drag & drop source map support
It's really easy to debug minify code. Source map support, not just beautifies the code, but also fetches code context.
Pro Click analytics
User click analytics without triggering any code. Easy to use query language helps drill down to specific component's analytics.