Hey fellow PCTers.
Paul Bodnar (author of Pocket PCT) and I have just put the finishing touches on a Pacific Crest Trail iPhone app and we thought you'd be interested. The first app, "Guthook's Hiking Guides: PCT SoCal" covers from Mexico to Tehachapi. The remainder of the trail will be available soon, and hopefully in the future there will be more trail systems to add.
Check it out at the App Store, or www.guthooksguides.com and let me know what you think!