Samril

Hi all. I am new to Geocaching and I am trying to find a cache. The app on my iphone 3GS that I am using seems to point me to something that looks like the cache is just off of the road. I am using the "Geocaching" app. But when I put the same coordinates into "MotionX-GPS" app it seems to point me very clearly much deeper in the woods! I have been twice to this location and can't figure out where I should be looking! Any help appreciated! Samril