The app part is trivial, the hard part would be maintaining good up to date datasets to make this actuallly useful. You'd also need quite a few more costumers t

The app part is trivial, the hard part would be maintaining good up to date datasets to make this actuallly useful. You'd also need quite a few more costumers than one patio11 to make it worth your while, and ironically, the need for this service in the first place suggests the potential market is still small. I.e. lots of organizations don't quite realize they have a need for this and would have a hard time understanding why its useful.