Astro - Solar Hour

About

Astro turns your iPhone into a window on the sky. Powered by your location and real solar geometry, it renders a time-reactive sky that shifts continuously across 17 hand-crafted colour stops - deep indigo at midnight, warm coral at dawn, cerulean at noon, violet at dusk. The colour is the clock. GOLDEN HOUR AND BLUE HOUR Know exactly when the warm light arrives, and when the blue hour frames it - morning and evening. The windows are derived from real sun elevation, not a fixed hour either side of sunset, so they lengthen and shorten correctly with the season and your latitude. Opt into a single quiet alert an hour before evening golden hour. THE SUN AND MOON, WHERE THEY ACTUALLY ARE A live sun and moon trace their true elliptical arcs across layered landscape silhouettes inspired by the visual worlds of Alto's Adventure and Firewatch. Tap the moon for tonight's phase. SCRUB THROUGH THE DAY Drag the ribbon to preview any moment of the day and watch the whole sky transform - then tap LIVE to snap back to now. WIDGETS AND STANDBY Home Screen and Lock Screen widgets carry the sky with you: the sun arc, sunrise, sunset, and the next golden hour at a glance. StandBy turns your iPhone into a solar clock on the nightstand. CHOOSE YOUR HORIZON Mountains, City, or Plains. Four landscape planes drift at different depths as you tilt the phone - a quiet sense of dimension. Toggle flying birds and your temperature unit to taste. AR SKY Step inside the celestial sphere. Today's sun and moon paths are drawn as rings around you, aligned to true north, with the current position of both bodies glowing on their tracks. WORKS ANYWHERE, INSTANTLY Every sunrise, sunset, solar noon, twilight and moon phase is computed on device using NOAA solar math. No account, no sign-up, no network - the sky is just there, accurate to the minute, wherever you are. Built for people who notice the light. No feeds, no streaks, no noise. Just the sky.