MainWP is always free for unlimited sites.
How is MainWP free, what’s the catch and how will you continue to pay development costs?
We make money by selling Extensions.
Extensions enhance your MainWP Dashboard with additional features. The catalog of MainWP Extensions include additional features for backups, marketing, SEO, maintenance, security, monitoring and other tools to help you build a better network.
You can buy Extensions individually or get them all by being a MainWP Member