Slack isn’t just another office collaboration app. The company has been called, “the fastest-growing workplace software ever.” Recent press reports claim that “users send more than 25 million messages each week,” and that the company is, “adding $1 million to its annual billing projections every six weeks.” Smelling an opportunity, investors just plowed $120 million into the company, giving it a $1.12 billion valuation.
“Our subscription revenue is growing about 8 percent monthly, before we add new sales,” says Slack’s business analytics lead Josh Pritchard. “This is, as far as I know, unheard for an enterprise SaaS company less than seven months after launch.”
Perhaps even more surprising, Slack’s user retention stands at an astonishing 93 percent. How does Slack get its users hooked?
On the surface, no single factor seems to set Slack apart from a plethora of other collaboration tools. However, a closer look using the model described in the book Hooked: How to Build Habit-Forming Product, reveals the user psychology behind the company’s success.