My app “SpacePi” won the QualityAppQuest contest and proved to be a blockbuster in Windows Store. You can find more info regarding the contest here. Its a great pleasure to have this recognition and inspiring me to develop more apps for Windows Store.
For all the developers out there, this is just a massage, developing Windows Store app is not hard to build. You just need the imagination of uniqueness and your code will follow your idea. All the best.