A: Hello, thank you for asking!

Tier 1 – "Starter" (1 site)
Tier 2 – (no specific name listed) – 5 websites
Tier 3 – "Professional" – 20 websites (the website says 25, but the AppSumo deal is for 20)
Tier 4 – We do not have a public sales link for the unlimited version. The unlimited tier is not usually offered for sale outside of special deals like this.