This is a nice app. with this app we can use dual whatsapp without uninstalling the other. this app supports also facebook, messaging and many more plugins. I have been using this product for the past 2 months and no fault have been discovered.
The disa app is available in play store and also it is free of cost. Really this is an marvellous app which can be used to solve the problem of having 2 whatsapp in a single mobile.