California based N’Joy iPhone Apps announces Doodle Light 2.0, their free app for iPhone 4 users. With a simple and cute interface with retina display, Doodle Light is super bright LED flashlight. While users can just shake to turn on, users can click one button to turn on real flashlight, or simply take its window. Doodle Light is always on until the application is closed. There is an option to set default light state, and supports strobe feature.