Lumy - Helps you track photographic times
Alpenglow - Never miss a incredible looking sunrise or sunset again
SunCalc - Find out where the sun will be at any time in any location
GoldenHour.One - Your personal assistant for outdoor photography for iOS
Solar Clock: Circadian Rhythm - Solar Clock: Circadian Rhythm syncs the Solar time with your Local time and shows important events (Sunrise, Waking up, Breakfast, Lunch, Solar Noon, Sport, Sunset, Sleep Time, …) based on Circadian rhythm.
Marline - Discover weather, tides and moon, like never before