Astro Planner

Plan every astrophotography shoot with precision. Astro Planner gives you all the data you need to capture stunning night sky photos — no subscription, no account required. Most features work fully offline.

No ads. No tracking. No subscriptions. Pay once, use forever.

━━━ SUN & MOON ━━━
• Sun and moon rise/set times for any location
• Azimuth positions on an interactive compass dial
• Plan compositions with landmarks at the right moment

━━━ GOLDEN & BLUE HOUR ━━━
• Precise morning and evening golden-hour windows
• Blue-hour times for that deep-cool light
• Calculated for your exact location and date

━━━ MOON PHASE CALENDAR ━━━
• Full monthly calendar with phase icons and illumination %
• Find the darkest nights for deep-sky imaging
• Plan moonlit landscapes around the gibbous

━━━ LIGHT POLLUTION MAP ━━━
• Interactive map with Bortle-scale overlay
• Find dark skies near you, drive less
• Tap any location for its Bortle level

━━━ MILKY WAY VISIBILITY ━━━
• Galactic-center altitude over the next 24 hours
• Visibility window factoring twilight + moon brightness
• Know exactly when the core is up

━━━ AURORA TRACKER ━━━
• Real-time Kp index from NOAA SWPC
• 3-day forecast chart with observed + predicted
• "Visible at your latitude" verdict based on geomagnetic position

━━━ BUILT FOR PHOTOGRAPHERS ━━━
• Mostly offline — calculations run on-device (aurora needs internet)
• Dark theme — preserves your night vision in the field
• Date picker — plan days, weeks, or months ahead
• GPS for accurate data wherever you are
• Home screen Moon widget — phase, illumination, rise and set
• English and Portuguese

━━━ HOW IT WORKS ━━━
Astronomical calculations are powered by the astronomia Dart library — a port of Jean Meeus's Astronomical Algorithms, the gold standard for celestial position math. No scraping prayer-time websites. No dependency on external servers (except NOAA for live aurora data). Real math, running locally.