WhatsApp is continuously working on introducing new features to create a user-friendly app on your handset. Recent reports state that the next update on WhatsApp will offer ‘voice calling’ option, which might be offered for free. AndroidWorld, a Dutch website has created some screenshots of the voice calling feature that will be added to the upcoming upgrade in 2015. The Android version of the WhatsApp app exists in two builds – the stable branch which can be found on the Play Store and another one which is distributed directly from the company’s website. The version on the company website, gets updated more frequently and has a lot of hidden features which undergo testing before it is ported as a stable build on the Play Store. The latest version on the company website had a lot of hidden secret screens that were unearthed. These screenshots point to a voice calling functionality which will most likely be seen on WhatsApp sooner rather than later. Although officially unconfirmed, the screenshots point to the fact that voice calling is being tested on WhatsApp. Media reports also speculate that WhatsApp may divide its screen in the form of a call log window. This window will help you view the list of missed WhatsApp calls, ongoing calls and received calls via WhatsApp. Another interesting feature includes call recording and playback. Once the VoIP feature is included, WhatsApp will fight with the likes of WeChat, Viber and Hangouts and aim to increase its user base. While there is no news on the official launch of this feature, one can expect WhatsApp to show its calling capabilities very soon. Earlier reports had also suggested on a web chat client being developed for WhatsApp.