Good on mobile .Worst on laptop. I'm advising everyone not to use this app on PC. There are problems in loading the code. First the code appears and we scan it but then it says to scan again,then what!, the code doesn't appear again and whatsapp just eats our data. I've read many reviews, and all those who have given bad ratings for the use of this app on Laptop have the same issue. This is the problem of the app and it's the creator's duty to fix it and have to fix it. I am really disappointed.