I bought this app a few weeks a ago called The Hunting Journal. Seems pretty decent so far. I'm logging all of my hunts with sightings, weather info and moon info.
I have Scout Look as well, but I could never get the hunting log to work.... May have been my error, not sure. I like the scent cone feature of Scout Look.
I use Trimble GPS Hunt to log all my hunts. I also can use it to plan hunts and scout online for new spots. It has every type of map available. I use Scout Look for weather and wind directions at all my sets.