It's just WhatsApp web as an app

same in India , everyone uses whatsapp even for official communication

It's impossible to convince that to friends and family. In my country everyone use WhatsApp as primary messaging app . It's kind of like iMessage situation in US

But WhatsApp have a really good app on windows which can attend calls and stuff . I think recently in Mac too . I'm using WhatsApp inside waydroid container in Linux so that I can at least attend calls

Try ViMusic