TrailSense, an easy to use, comprehensive wilderness tool.

The goals of the developer are fun to consider:

Goals

• Trail Sense must not use the Internet in any way, as I want the entire app usable when there is no Internet connection

• Features must provide some benefits to people using the app while hiking, in a survival situation, etc.

• Features should make use of the sensors on a phone rather than relying on stored information such as guides

• Features must be based on peer-reviewed science or be verified against real world data

Likewise, the features being developed under those goals are great for getting outside:

Features

• Designed for hiking, backpacking, camping, and geocaching
• Place beacons and navigate to them
• Follow paths
• Retrace your steps with backtrack
• Use a photo as a map
• Plan what to pack
• Be alerted before the sun sets
• Predict the weather
• Use your phone for astronomy
• And more