Microsoft's Windows Phone platform continues to struggle against the might of both iOS and Android in the battle of the mobile ecosystems, and while the UI and functionality of the Redmond company's mobile software has been praised and lauded by many - including Apple co-founder Steve Wozniak - the lack of apps over at the Windows Phone Store has been more than a slight problem. While one app certainly won't be enough to completely change the fortunes of the still fledgling platform, an official Instagram app for Windows Phone has been conspicuous by its absence, and while there's still no sign of the Facebook-owned product making its way to the tiled interface, a third-party offering by the name of 6tag finally offers an almost fully-functional Instagram experience.