Polar Analytics uses your sales data to create transparent and customizable reports. We do not interfere with your website in any way - the app works fully in the backend.
What about the Polar Pixel?
For Polar Pixel to correctly attribute your sales to marketing campaigns, you need to add a small snippet of code to your stores' theme. This will also not impact the loading speed of your Shopify store.
If you have any additional questions, feel free to reach out to our Support team via the chat