A free app for Android, by Frontdesk Group.

FreeCalls World is an app that lets you make free international calls, even if the recipient has no internet connection. The app is based on the concept of VoIP, which is the use of an Internet-based telephone system.

So, you can call anyone, anywhere in the world for free. The app is compatible with WiFi, 3G, 4G, and LTE networks, as well as mobile and landline phone numbers.

In addition, it is compatible with many different phone numbers from different countries and regions.

You can make calls to any phone number in over 180 countries and regions.