25dev has released a new flashlight app that uses the proximity sensor on the iPhone to turn the LED flash on and off. Like other iPhone flashlight apps, the app allows users to turn their iPhone 4/4S LED flash on for use as a flashlight, however it also makes use of the proximity sensor allowing users to have the flashlight automatically turn off when the iPhone screen is covered, such as when the iPHone is in a pocket, flip-case or simply lying…