Both Viber and Skype have an excellent rating because both offer a smooth conference call experience. Viber is the mobile phone app and makes communication much easier as you don’t need to log in through desktop.
Although you can use the computer version too but mobile app is too good for communication. You need a phone number to create a Viber account. In contrast, Skype is connected through Email Id, mainly it works best with the desktop version.
For hassle-free communication, Viber is better as you can easily connect through the mobile phone. No need to open the laptop, rather you can attend conference call through Viber via phone. Although both offer the best communication system but Viber is more convenient.