Flashlight.

One of the original apps on the App Store, Flashlight has been downloaded over 100 million times since 2008.

Flashlight goes way beyond the standard white light into a world you can illuminate with special effects that you customize. Effects include magnifying lens, customizable candy hearts, fireworks, holiday lights, Halloween themes, and photos.

Customizable strobe modes, full white screen option, LED brightness control, color wheel selection, and adjustable effect speeds through multi-finger gestures.