Update fail – NYT VR - New York Times Review

I installed this on my iPod touch 5th gen when I first received NYT-VR in the mail and enjoyed it. Now, it asks me to update it from the App Store, upon doing so I am given an error that it won't work on my iPod. If the update won't work on my iPod why is it asking me to update?
Review by Ebonflame on NYT VR - New York Times.