A free app for Android, by Global Call.

By using a broadband Internet connection rather than an ordinary (or analog) phone line, Voice over Internet Protocol (VoIP) technology enables voice calls to be placed. Some VoIP providers could limit your calling options to other users of the same service, while others might let you call anyone with a phone number.

WhatsCall is a VOIP phone call app that makes free international calls from all around the world and supports G.729, G.711, and other standards.

You can make international calls to any country in the world with No Phone Bills – Free Calling, even if the recipient doesn’t have an Internet connection.

Calls are made in high-quality, crystal-clear voice quality, just like they would from a landline, with Clear & Stable Calling.

Limitless Call Credits – There are various ways to get credit, but the simplest ones only only a single tap. Performing various entertaining tasks will get you additional credits.