Although the sun is about 93 million miles away, it is still very strong. To protect oneself from the sun's harmful UV rays, there is iSunBurn. Developed by independent developer Monika Morris, this iOS app will indicate the UV index forecast and associated risk for the day. Clouds can be deceptive; even though there isn't any sun, UV rays can still cause sun burn. The app's UV index scale measures from one, for low risk, to 11-plus for high risk. The app instructs travelers which SPF level of sunscreen to use and when to wear protective clothing and sunglasses, and it also specifies how long it would take to burn.