Nice article, great recommendations. Proper instrumentation and aggregate metrics are essential, but its also impt to know the user on an individual basis- inte

Nice article, great recommendations. Proper instrumentation and aggregate metrics are essential, but its also impt to know the user on an individual basis- intercom is the only one on this list designed to help do that. If I was writing this article I'd include some funnel tools on mobile too: tapstream, flurry, and paid marketing, like adstage.