Android

Android application 1:
Calculate your Geek Cred Points: android01.zip

Android application 2:
Take notes and switch between activities: android02.zip

Android application 3:
SQL snippets: android03.zip

iPhone

iPhone week 1:
iphone_week1.zip
Search for images via Google images:

iPhone Project Proposal:
plain text
Word document
Word document (revision 2)
Word document (revision 3)
Word document (revision 4)

iPhone project mockup:
iphone_music_project.zip

Objective C tips:
Although C-strings are supported, the preferred string type is 'NSString'. Make sure to prefix any literals with '@':
NSString* str = @"string";

When outputting NSStrings, the correct escape code is '%@', not '%s' as may be expected:
NSString* str = @"string";
NSLog(@"your string's contents are: %@', str);