I was surprised how full-featured and easy to use it was. A little easier to navigate than Google Analytics. There's also decent support for it from community packages on NPM and stuff, like a react component.

However, this version of Metrika does not have events. There is a new version, App Metrika, that is in beta, which I think has events.

Also, the site is a little slow. Very tolerable but not quite as snappy as Google Analytics, in terms of the web control panel.