No list of the best video calling apps can be complete without mentioning Skype, at least because of the app's insane popularity. During the call, the application interface is lost.

The app shows video of the calling person before the addressee answers to the call, this feature is called Knock Knock. At the same time only two people can participate in the conversation, so video conferencing can not be carried with Duo. The app can switch between Wi-Fi and mobile data transmission right while talking. Video calls work well in terms of mobile Internet. As an example, you can't start a video call directly instead, you have to place a new call and then select the video option from the app. Viber is an all-purpose messaging app if we've ever seen one, although the interface is probably less intuitive than it should be. Aside from its newfound video calling capabilities, Viber also allows you to send stickers, messages, photos, voice messages, or even share your location. Viber adds an interesting twist to the mix, allowing the user to choose between sending a pre-made video in a chat session or engaging in a live video chat. We'll start with Viber, a popular messaging app that added video calling back in 2014. Now that we've covered the default video calling apps on both Android and iOS, it's time to look for third-party alternatives.

Ardas team reviewed several similar applications.

Because of the multiplatform Duo is a good alternative to FaceTime, but limited functionality makes it not the best application for video calls. The application can communicate with a maximum of two people, it is available for iOS and Android, and all calls are encrypted end-to-end. August 18 Google has released an application Duo for video calls.

Viber video calling app