It's simple to integrate any 3rd party app in Builder! Each 3rd party app you use should provide a snippet of code you can add to your Builder pages. Simply drag and drop a custom code block component onto the page you are working on in Builder. Then paste in the liquid code from your 3rd party app into the custom code block.
Don't know where or how to install this code? Chat us and we'll integrate the code to your Shopify store for you, for free!