I use many apps…but drum roll…let me check my screen time on my iPhone! It says the winner is: WA Business, better known as WhatsApp! Last Week I used it 29h and 48m! Number 2 was Facebook at 21h 33m! So there you have it. And I mostly use my phone. Now the Why…I love the interface of WA Business over any of the other messengers which I use all, Telegram, FB Messenger, Skype, Line, Viber, Slack etc. That’s where I communicate with Business Associates.