Solander: Sun & Moon Planner

Solander is a sun and moon planner for photographers. It works out what the sun, the moon and the dark will do at your spot — hour by hour, days ahead — so you know the light before you go, and whether tonight is worth going out. Drag the wheel along the bottom of the screen and the whole app retunes to that moment. Every screen answers in the same currency: hours of light you can actually use. SIX TABS, ONE QUESTION SKY — what the light is doing now, and how long you have left of it. The day's whole run of light — blue hour, sunrise, golden hour, sunset, true dark — measured to the minute. ASTRO — one number: how much genuinely dark, cloud-free sky tonight gives you. The ring draws the dark, the cloud and the moon as separate lanes, so you can see what is costing you the night. MAP — the sun's and the moon's paths for the day, drawn around your pin. Scrub back through the afternoon and…