Polish private rental apartment market is established around one popular service. Ads are displayed based on creation time (newest first).
The main issue here is that most of these ads are re-posted every day in order for them to show up on top of the list.
From the otter that wants to move to the bigger city perspective it's meh because you need to get through many ads before you find the ones introduced today...
This app solves that problem. It scrap ads, watch for duplicated offers and gather those data. Daily report with interesting findings is distributed to the concerned parties via a gmail account.