Need Popup Plugin, which shows popup after x image on the page (wordpress)

Hey,

I Need a Popup Plugin, which shows a popup after x images on the page (wordpress).

For example, I have an article with 16 images and my article got 4 pages (4 images per page), then I want to have a popup on page 2 of the article and on that page after 2 images. Is there something like that avaiable on wordpress ?

not too sure if this is of any use
http://wppopupmagic.com/
Shortcode trigger is the nearest i think
Demo: http://wppopupmagic.com/shortcode-triggered-popups/

Hope this plugin will help you : https://wordpress.org/plugins/lightbox/