Question: app to do international calls?
Answer: WhatsApp. The world's most popular communication app. ... , WeChat. China's #1 chat app. ... , Skype. For the business person on the go. ... , Rebtel. WiFi free international calling. ... , LINE. For emoji fiends. ... , Viber. Make calls to landlines. ... , Google Voice. For traveling in the U.S. ... , Voxofon.