Maps out the position of the sun to determine the time of day and then Google Maps for an aerial view of the property. Saves time during pre-site selection. Sun Seeker - $9 https://itunes.apple.com/us/app/id330247123 Provides a FLAT VIEW COMPASS and an AUGMENTED REALITY CAMERA 3-D VIEW showing the solar path, its hour intervals, its winter and summer solstice paths, rise and set times and more and a MAP VIEW showing solar direction for each daylight hour.
Even better. Try "The Photographers Ephemeris" This is THE app used by most of the pro photographers I know. You can enter elevations so that you know where shadows will fall, or in my case how the mountains will affect a shot, or where the sun/moon will be on a peak. Runs on iPad and iPhone, Mac, Android and yes even Windoz...
I'm a D.P and used it all the time. Great tool. Often we scout locations that we'll shoot 2 or 3 months out. What I love is the ability to dial in a date and see where the sun will be in the future.