KnownCalls is the new free filter and blocker of unsolicited calls and messages app for Android, with 0 cost, 0 advertisements, 0 excessive permissions requests, and 0 intrusion on your privacy.
Simple 1-click functionality, easily configurable and works completely without the Internet access.
The work scheme is simple: when activated, it rejects incoming calls from numbers that are not in your device's Phonebook or Favorites. It can also mute incoming unwanted text messages even if the phone is not on silent!
Works against telemarketers, anonymous or hidden numbers, robocalls, spam or other unknown calls or messages, and various kinds of scammers. The app is perfect for users of any age or profession, from polititians, businessmen, or other public people, to elderly or children who need protection from scam or fraudsters.