IMO is Best app for video calling. I used IMO app first time then I surprised because that app work Very slow internet connection. That was amazing experience.
Design and layout is very simple and nice. User interface is user friendly. You can install and register for use only few minutes.
Many amazing features are available in this app like another similar messenger apps. You can used text, audio calls and video calls at a single platform.
This app is very useful for everyone.