CallFilter allows you to block/unblock incoming calls as easy as setting up a filter rule plus it keeps a log with all the rejected calls.

It allows you to hang-up any incoming calls from contacts selected as a filter rule in main application screen. Gives you a very convenient and quick access to block/unblock some phone number at runtime. This is convenient in situations when your BOSS is always on your head and you don't want to answer his call at certain moments during the day, it takes a few clicks and you are done blocking your BOSS calls. The logs screen maintains a list of rejected calls and allows placing a quick call or an sms to the rejected phone number.