Apps similar to Gravity Forms include GriffinForms, which has a free version. Other options are FlowForms, Contact Form 7, Tripetto and Forminator. There's no shortage of Form Builders like Gravity Forms, with more than 25 alternatives for self-hosting, the web, Windows, Linux and Mac.
Contact form builder for WordPress with conditional logic. Drag-and-drop building, entry storage and CSV export are free; payments and integrations are Pro.
Forminix is a WordPress Form Builder plugin which lets WordPress Admins create customizable forms for contact page, survey, job application or for many usages.
VFB Pro is an affordable WordPress plugin that helps you build beautiful, fully functional contact forms in only a few minutes without writing PHP, CSS, or HTML.
PerfectContactForm is a simple solution for receive feedback, queries, and concerns from your visitors. Unlike other solutions, it can be integrated seamlessly with just one line of code and makes it simple to respond to incoming requests from your inbox.
