Green and blue dots are indicators if someones online now or recently online. If theres a green dot or indicator on someones profile saying he or she is Online Now, it means that person is currently active on Zoosk.

How can you tell when someone was last active on Zoosk?

In particular, Zoosk uses a blue dot in the persons profile to indicate whether they have been active within the past seven days. Being active doesnt mean swiping, just that they have been logged into their Zoosk account in that time. The green dot on the profile means they are currently logged into the app.