Unable to activate "focus"

[chocolics]

I just installed the plugin through word press and amusing the "free" version, however I am not able to activate "focus" in extension manager along with few other features. is "focus" only available in paid version?

[sybrew]

Hello!

Yes, Focus is a Premium extension that requires a subscription.
It is how we sustain our work and keep everything else free.

The neat thing about Focus is that it uses the same dictionary as Google for keyword synonym/inflection lookups to prevent keyword spam. This API makes Focus unique, but it also costs money to operate.