How do the rendered products stats work?
They display the number of products rendered in your store by the app, even if they have not seen by anyone.
Every time the app loads in your page, it renders the configured number of products into the app widget.
For example, if the app widget is configured to display 3 products and you load a product page 4 times, this count will be increased by 12.
Repetitions are not excluded, a product is counted as many times as it is rendered.