Astra Pro has been one of the most popular WordPress themes, wildly popular among page builder users like Elementor users or Beaver Builder users. Astra pro developers. These are the same developers behind various popular WordPress themes like schema pro, convert pro and even add on plugins for various page builders like ultimate addons for Elementor or ultimate add ons for Beaver Builder and more recently, ultimate add ons for Gutenberg. Astra theme, similar to other themes like generate press ocean WP, is a freemium theme. That means that there is a free version of the theme that lacks some functionalities like premium modules and custom layouts.