From an app bundle identifier, return the name of that app

NSString+AppName.h

//
//  NSString+AppName.h
//
//  Created by Scott Jackson on 4/07/12.
//  Copyright (c) 2012 SJSoftware. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface NSString (AppName)

+ (NSString *)nameOfApplicationWithBundleIdentifier:(NSString *)bundleIdentifier;

@end

NSString+AppName.m

//
//  NSString+AppName.m
//
//  Created by Scott Jackson on 4/07/12.
//  Copyright (c) 2012 SJSoftware. All rights reserved.
//

#import "NSString+AppName.h"

@implementation NSString (AppName)

+ (NSString *)nameOfApplicationWithBundleIdentifier:(NSString *)bundleIdentifier {
	NSString *bundlePath = [[NSWorkspace sharedWorkspace] absolutePathForAppBundleWithIdentifier:bundleIdentifier];
	NSBundle *appBundle = [NSBundle bundleWithPath:bundlePath];
	return [appBundle objectForInfoDictionaryKey:(id)kCFBundleNameKey];
}

@end