A free app for Android, by Mobile Tools Pro.

This app can be used to identify unknown callers, block spam calls, and robocalls, as well as any unwanted calls. It is very easy to use and lightweight. It can be downloaded and used on Android devices. It works like a phone number search, call blocker, and phone dialer app.

It can identify and show the true caller ID name and region for the number calling you. It also provides an option to find out more information about the caller, such as the number, the country, etc.

The app has a call history, which can be checked to see if the caller has been blocked or not.