[pct-l] Advice for iPhone apps?

[Diane Soini of Santa Barbara Hikes]

The most useful app: The off button.

Sorry, these dark mornings again are making me cranky and bringing  
out my luddite nature.
On Mar 16, 2011, at 8:24 PM, pct-l-request at backcountry.net wrote:
>
> Any advice out there for the best iPhone apps useful for a 2011  
> thru-hike on
> the PCT?  I remember seeing various suggestions in other subject lines
> sometime back, but haven't managed to locate them.  Topo maps, GPS,
> downloading Half-Mile's waypoints to iPhone.  Any advice would be
> appreciated.  Looking forward to meeting many of you on the trail  
> or at
> kick-off.