Which app is this?

Don't know what app they were referring to, but i have used white pages caller ID, which is not called Hiya.  It does a good job of blocking the calls, once you mark it as spam.

What's the name of the app please? Thanks

Try Hiya....it used to be called White Pages.  Good job of blocking calls, once you report one as spam.

What are they selling?  Do we want to "Buy" it???