Labrika checks their URLS & content, and then cross compares them to your website by using complex algorithms that monitor LSI, TF-IDF, metadata, keyword density, snippets, page titles, media, and page structure.
They also offer an advanced rank checker that will automatically find all the landing pages that a keyword ranks on, and then organize them for you accordingly. You can schedule automatic rank checking, or manually get Labrika to check your rankings as often as you would like.