Cancel App from your iPhone

• 1). Press the "Home" button on your iPhone, and slide your finger across the screen to unlock the device.
  
  
• 2). Press your finger against the application you wish to remove from your menu until it starts shaking. Tap the "X" button in the upper-left corner of the app icon.
  
  
• 3). Tap the "Delete" button on the dialog box, and tap "No Thanks" to bypass rating the app before cancellation.
  
  

Cancel App from iTunes

• 1). Plug your iPhone's USB cable into the iPhone's bottom port, and connect the other end into an available USB port on the computer.
  
  
• 2). Click "Start," "All Programs," "Apple" and "iTunes" to open iTunes on a PC. Click the "iTunes" icon on the dock for Macintosh computers.
  
  
• 3). Click the "iPhone" tab in the iTunes sidebar and click the "Applications" tab.
  
  
• 4). Uncheck the app you wish to delete, and click "Apply." Click "Remove" on the dialog box to confirm the removal.
  
  
• 5). Disconnect the iPhone when iTunes displays the "iPhone sync is complete. OK to disconnect" message at the top of the application window.