We mentioned earlier about the third party OpenWhatsApp for BlackBerry 10, just received an e-mail from the developer to try it out, I must say say it works incredible, very fluid, might be even better than the native app WhatsApp is currently working on as it packs more features. See OpenWhatsApp in action below:
To sign up to test OpenWhatsApp check for more info here. What do you all think of the UI? As far as the functionality there is no lag and it works great.