Hell.! I am gonna tell about IMO app. I am using this app since 2014. It is a video calling app. In this app we are chatting, sharing photos and videos send to known persons. This app users easily understand how to make calls. But I founded too many problems in this app, like the app video calls picture quality is not good. Sound quality is also not good. The videos calls are struck up not working properly. The app automatically send messages whenever you install this app, it is major problem to me. The app privacy security also not well. It is not a user friendly video calling app. The app layout and design not much well. I am unsatisfied with this app. I don’t want recommend anyone to install this app.