gistfile1.m

static NSString *test;

%hook SpringBoard
-(id)init {
	id obj = %orig;
	test = @"i'm from springboard";
	return obj;
}
%end

%hook MyAppStoreApp
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
	if (test != nil && [test isEqualToString:@"i'm from springboard"]) {
		NSLog(@"i can access SB's static var");
	} else {
		NSLog(@"i cannot access SB's static var");
	}
}
%end