Publishing to iOS App Store

Hey Guys,

My app is very close to being ready to publish, but we ran out of funds. Basically, we got bogged down with the ability to upgrade from free to paid in app.

In order to publish, I wanted to make the app free, but then have the ability to get the paid option through my website.

Does anyone have any suggestions about how to go about this? Any guides for publishing in the iOS store?

Here's my demo and where we are:
https://pocketplan.io/advisor-leap/advisor-demo-walk-through/