The headline is that Slack has hit 4,000,000 daily active users. But what comes just underneath it may be more interesting to SaaS founders and developers.
6,000,000 Slack apps have been installed with a velocity of 415,000 apps installed every month. The Slack App Directory launched ten months ago with 150 apps and that number has grown to 746.
When fast-growing platforms are young, huge opportunities exist for you to launch on it and use it as a major source of customer acquisition before the platform becomes saturated. For example, in 2006, we launched Crazy Egg on Digg and it brought so many customers to our site that it took down our servers.
Here's your opportunity on Slack:
Slack has 5,000 daily active users per app in the App Directory, 10x the ratio of users to apps in the Apple App Store. Startups looking for initial traction are launching on Slack—like the recently-launched sales bot Troops.
The App Directory has 91 apps per category on average. There are so few apps that the category pages display apps in a single list with no pagination. Four categories have fewer than 30 apps with Health and Medical at the fewest with 15.
Apps provide a huge part of Slack's value for must-have users. When I surveyed Slack users in May 2015, nearly 100% of must-have users had a favorite integration, they mentioned integrations as a key benefit to using Slack, and they requested better ones.