This application blocks unwanted calls by using the blacklist. It is very simple to use.

You can block any number from the contact list from the call log or by adding it manually.

Characteristics:
- Black list of numbers (block incoming calls).
- White list (numbers never locked)
- Daily recording of blocked calls
- Block private numbers (hidden)
- Locks all numbers that are not in the contact list
- Block all incoming calls
- Notification of blocked calls (Can be disabled in the settings window)
- Activate and deactivate time
- Activate and deactivate call blocking (from the sales configuration)

Advantage:
- Easy to use
- Is stable

And it's totally free!