In addition to standard first aid info you see in other apps, it includes symptoms that dictate when to evacuate, which is important in a wilderness situation. Also has a practical step by step CPR guide that when started, vibrates your phone every time you should be doing a compression. Its started with two taps and you put it in your pocket or whatever and compress for each vibration. The pace of compressions seem to be a challenge for many.
Overall some of the images in the various topics are a little hard to read. Looks like scans from a book and even when enlarged some text is tiny and a little rasterized. However the images are supplemental and the core info is very clear to read in simple, large text.
H36th3r about Wilderness First Aid App