Advanced Custom Fields is a powerfull plugin to create fields for posts or custom post types, but to make a form using Advanced Custom Fields you need to hook WordPress and make extra php coding. With ACF Front Form you can make Front end Forms with Advanced Custom Fields using WPBakery Page Builder (formerly Visual Composer) or shortcode, without extra coding or hooking to use acf_form() function, just add a shortcode with all needed paramerters and your form is ready to use.