Elementor Pro takes the free Elementor page builder and adds the parts most people end up wanting sooner or later. The Theme Builder is the big one. Instead of being stuck with what your theme gives you, you can design your own header, footer, single post layout, archive pages and 404 page, and apply them across the whole site. That alone saves a lot of fiddling with theme files. It also adds a proper form builder, so you can build contact forms and connect them to your email tool without a separate plugin, plus popups you can trigger by time, scroll or exit intent. The WooCommerce builder lets you design product and shop pages to match the rest of the site, rather than living with the default layout. You get more than 100 extra widgets too, including sliders, pricing tables, countdowns and post grids. Everything is still drag and drop, and it works on top of the free version, so you need both installed. If you build sites for clients, this is the version that pays for itself on the first job.