In app scam

Go to settings> privacy> advertising> limit ad tracking .. See if it helps

 

Maybe send it also to Apple ... they might be interested to figure out what app is promoted and have a talk with the provider. At least worth a try.

 

You could try via here: https://getsupport.apple.com/Issues.action
or http://www.apple.com/feedback/

There is maybe also a link in iTunes with feedback on apps directly.

 

This smells more of a "wrapper" app, an app that is basically picking up the mobile webpage of the website and displaying it, much like the BBC sport app.
If the site has nefarious advertising, then that might shine through the app to the user.

 

That's exactly what it seems like.

 

It could still be just pulling web data, including some sort of embedded pop-up type of calls or ads that can appear that way. It could still be the app itself in some sense, but that pop-up seems to be more like what you get with web content.