Meristar

Meristar turns your phone into a pocket planetarium. Whether you're a curious beginner or a seasoned stargazer, it helps you find, learn, and fall in love with the night sky — no telescope required. Explore a beautifully drawn star map of twelve of the most famous constellations, follow the Moon through its phases, and pick up the fundamentals of observing with clear, friendly guides. A UNIVERSE IN YOUR POCKET • Twelve famous constellations — Orion, Ursa Major, Cassiopeia, Leo, Cygnus and more — each with its own star map, meaning, brightest star, and best viewing season. • Today's Moon — see the current phase and illumination at a glance, refreshed as the night goes on. • Night Sky Guide — bite-sized cards on stars, planets, meteors, moon phases, and beating light pollution. • Favorites — save the constellations you love and keep them one tap away. DESIGNED FOR THE DARK Meristar is built for night use, with a deep dark-sky theme, a gentle animated starfield, and softly glowing constellations that stay easy on the eyes once your vision is dark-adapted. LEARN AS YOU LOOK Every constellation comes with a plain-language description and practical observing details, so you always know when and where to look up. SIMPLE, PRIVATE, OFFLINE No account. No ads. No tracking. Your favorites live right on your device and work completely offline — perfect for a night far from the city lights. Look up. Meristar will help you find your way.