A free program for Android, by Gogolook.

Have you ever received a phone call and didn’t know who was calling you? Or you wanted to block a number but didn’t know how?

If so, then you are in the right place. With Whoscall, you can find out who is calling you by simply searching for the number. You will also be able to identify incoming calls and messages.

With this app, you can have an Answer, a Hang up, a Speaker, or a Whoscall Call Interface to identify incoming and outgoing calls.

You will also be able to catch important messages by searching for them.

And if you want to block a number, you can do it easily as well.