GhostCam is a camera lens app for Windows Phone 8 that allows you to create a spooktacular image by overlaying a ghostly presence on to a photo at capture time. The app gives you control over the type and position of the ghost and makes it easy to share the final creation to social media using Windows Phone's standard sharing framework. 

GhostCam is a good example of a throwaway (time limited) app. It's not going to set the world on fire, but it is the kind of app that every platform needs to fill out an app store. Microsoft and Nokia are doing a reasonable job of making sure the big name apps are in place, but the commentary around the app is shifting to a discussion around app store breadth (where throwaway apps are a big factor) and the ability of Windows Phone to attract apps from start ups and other resource limited companies (understandably, given the respective installed user base, it is currently almost always iOS or Android first).

GhostCam is one of a number of Halloween apps that are available in the Windows Phone Store. Other seasonally themed titles of interest includeMitclan (monsters attack Mexican land of the dead), Halloween Makeup Tutorials (embrace your inner zombie), and Pumpkin Smash 3 (follow Bones McScaryPants into the haunted Insane Asylum).

And if that's not enough for you Microsoft has created a Halloween themed collection in the Windows Phone Store, listing 29 of the top apps that have some connection to this time of year (from Angry Birds Seasons to Ghost Radar Classic). You can access the collection either on the Windows Phone website, or through the collections section of the Store app on your Windows Phone device.

Windows Phone Store description:

Overlay your photos a ghost and scare your friends or yourself. Save or share with your friends your photos on facebook, twitter or any other accounts sharing you have!

GhostCam is a free download from the Windows Phone Store. A number of ghost images are included with the app, with additional images available via in app purchase.