It seems Specter was temporarily pulled for some sort of update and is again available as the only available Snapchat app in Windows Store. Thanks everyone who tipped us about this.
Some days ago maybe on 12th feb, a new app joined store named as Specter which was a new Snapchat third party client for Windows users. But as we knew somewhere in future this app had a risk of getting pulled from store as Snapchat hates Windows phone. Now today one of the readers of our site noticed that the Specter app is now no longer available as it may have been removed from store.
It is also possible that snapchat people noticed this app on Windows store, and they reported Microsoft about it and Microsoft removed it. And also there were chances that your profile get banned from snapchat as you are using this third party app, which is not acceptable for official snapchat. But we are not sure that it has been removed by Snapchat, we will share more info on this, once we have. So now at last the app is no longer downloadable to your phone.
You can read more about Specter app by clicking here.
We are thankful to Rajesh for the tip!!