Birth Sky Downloads & RevenueBirth Sky · App Store

Every sky exists only once. Because Earth, the stars, and the planets are constantly in motion, no view of the night sky ever repeats. You were born under a sky that had never existed before and will never exist again. That makes it a fingerprint over your head.

Birth Sky calculates what your sky looked like the moment you were born. It shows the real stars and planets as they stood at that instant, and finds the catalogued star closest to directly over your head: your zenith star. Then it tells you its story.

Not astrology. A personal connection to real astronomy.

:: How it works ::

1. Enter your date, time, and place of birth
2. Watch your birth sky being revealed
3. Explore your sky map and read your story
4. Save or share it

:: Scientifically accurate ::

Built on real astronomical calculations, not symbolic charts or interpretations.

• True star positions, corrected for precession
• Visible planets and their positions
• Moon phase, illumination, and position
• Historical time zones, reconstructed accurately

All calculations run on your device.

Birth Sky uses the same sources professional astronomers rely on: the Hipparcos star catalogue from the European Space Agency, the VSOP87 planetary theory, the ELP2000 lunar theory, and the official IAU constellation boundaries.

:: A sky you can explore ::

• A circular sky map centered on your zenith
• Optional constellation lines and names
• Planet markers and Moon phase
• Pinch to zoom in and explore every corner of your sky
• Beautiful constellation artwork

Designed to feel calm and timeless.

:: Personal insights ::

• Your zenith star, chosen from a catalog of 9,000 stars
• The constellation that star is part of
• Your birth Moon: phase, illumination, and lunar age
• The planets visible at that moment
• Whether you arrived by day, night, or twilight

:: Share your sky ::

• Social media ready video
• High resolution image at any zoom level
• A meaningful gift for birthdays, newborns, and anniversaries

:: Perfect for ::

• Anyone curious about the sky they were born under
• New parents capturing their baby's first sky
• Birthdays, anniversaries, and once in a lifetime moments
• Lovers of astronomy, history, and the cosmos

Birth Sky is not about prediction or personality traits. It is about precision, identity, and wonder. The sky you were born under, finally revealed.