LightMeUp

Just hold the phone next to you with the screen pointing backwards. You will then be seen from front and rear.
In this app you can turn on front flashlight and screen at the same time. This will help to to be seen from every direction with some cool settings for flashlight and screen.

Settings:
Strenght for flashlight.
Blink mode.
Lines and eye animation for screen.
Color and bike mode for screen.