I did not find a link to Tor or The Onion Router (Tor), and the content is different from the screenshot. It is closer to a list that brings together several sites than an anonymous communication service.
I randomly clicked on some of the sites that were recommended, they are full of spam and have more than one tracker and some of them even record keyboard clicks which makes them bad for privacy.
There is an app on Google Play but it only has 10 downloads
https://play.google.com/store/apps/details?id=app.Blackpage.BlackpagePlease do feel free to name or DM me the name of the site in question so that it can be removed. Some of the links in the portal have not been re-verified in 12 months. Also, yes the Blackpage app has ben entirely in stealth mode until today and we do not intend to artificially boost that number.