Remindee tracks each popup individually, which means that you will have data for each popup. So, for a given domain you will be able to see which popup perform the best in the blink of an eye.
But, you can create, edit or delete as many popups as you want without having anything to do on your site. When the Remindee script is implemented in your site, you will not have any other piece of code or tracking to install later.