Vigu360 today announces Flashlight Four 2.0.1 for iPhone 4, an update to their free app that includes a flashlight function, plus a strobe light that can be set to flash to the beat of the music being played, or to any set frequency. Flashlight Four activates just iPhone 4's powerful LED, normally used as a supplementary light source for video recording, not the camera. In Beat Strobe mode, the app flashes the strobe in time with the music being played, conveniently creating a party atmosphere.
