Your iPhone is a great tool to catalog your outdoor explorations. For an example, check out the image of Longs Peak that I took with my iPhone in Rocky Mountain National Park. Until I acquired a Nikon camera a few weeks ago, I relied solely on my iPhone for outdoor photography. I purchased the 32GB model of the 5s for the extra photo storage. I am no professional photographer, but I travel for work or play about once a month so you can imagine how many photos I have amassed.
Here is some insight into the best apps and tools to use for your adventures: