Caldera Forms is an awesome free WordPress plugin to create responsive forms.
Do you want to create a responsive multi column form? Do you want to create a multi page form? Do you want to create a pricing calculator form? Do you want to create a really complex form with a very complex layout very easily without spending a penny? don’t spend hours on Google, just download and install Caldera Forms.
With very easy to use drag and drop form and layout builder you will only need few minutes even to create a complex form.
Caldera forms comes with a stripped down version of bootstrap for form and grid styling, but you can turn them off and use your own styles. There are few paid add-ons available for Caldera forms, but you will only need them if you want to connect the form to a payment gateway. There are many awesome free add-ons too. If you want to receive a slack notification whenever someone submits a form, there is a free add-on for that. If you want to use Caldera forms to create custom meta fields to your post types or pages, there is a free add-on for that. Do you want to do something else with your submitted data, there is a free add-on for that too… How great is this? Seriously!
Add-ons : https://calderawp.com/caldera-forms-add-ons/