What's the best multistep dynamic form app for a project?

[aprilt]

Hello, I'm looking for a multistep dynamic/conditional forms app that fit and would be able to deliver my workflow diagram below. 

Any suggestions? 

[Marek_Dove1]

Hello @aprilt ,

How are you doing?

I have seen the image and the image have explain much about this.

The best platform to get this flows is called Klaviyo, but the klaviyo has some ways to do this, I am an expert who can help you in making klaviyo flows for your website. this goes out like a mail message to your active buyers to let them know about the new update about your store.

Kindly message me or reply here for more details about the project,

Thank you.