Any APPS that allow full control over the product URL's? by PKDDS

Hello,

I'm thinking of migrating my existing store to Shopify.

However, I need to have all of our store URL's (structure only) the same - meaning I need to have 100% control over the URL structure. This is so that I make sure my website doesn't lose all the FB Like counts on the individual product pages as well as the Google juice that's built up for those pages.

From what I understand, Shopify doesn't allow customized URL's beyond the URL slug for the product itself. 

Are there any apps that allow this? 

For example, is this possible? www.mywebsite.com/{custom-directory-i-choose}/{a-custom-name-i-choose} or does the product URL have to be www.mywebsite.com/products/{product-name}

Any help is much appreciated.