Yes — on Google Play
Slack has a Google Play listing.
App Store
On Google Play
Is Slack on Android?
About Slack
Companies in every industry around the world grow their business in Slack because it gets busywork off their plates and wasteful meetings off their calendars. Slack brings everyone from coworkers, customers, and contractors into one secure place, so you don’t have to chase approvals or wait around on emails. Slack …
Slack is listed on both the App Store and Google Play from Slack Technologies, Inc., so you can install it on Android phones and tablets. The Play Store listing shows 10,000,000+ installs.