Nurtra. runs on your orders, products and customers rather than on top of one marketing tool.
The analysis needs the same three things from any store: what was ordered, what you sell, and who bought it. That makes Nurtra. portable across platforms rather than tied to one.
You choose your platform during setup and Nurtra. gives you the matching export instructions and a CSV template. There is no app to install and nothing to authorise on your storefront.
A copy of three things, uploaded by you. Nurtra. has no access to your store and no way to change anything in it.
What was bought, when, and in what sequence. This is where the product relationships come from.
Your catalogue, prices and availability, so a recommendation only ever points at something you can actually sell.
Purchasing behaviour over time. Customer identifiers are hashed on import, so Nurtra. works from buying patterns and never stores who anyone is.