Your sensors measure where you aim, astronomy does the rest: the reticle names the
star — 330 named stars (official IAU list), 5,000 field stars, planets, Sun and Moon. Right in your browser.
Your phone will ask for 3 permissions — accept them:
🧭 Orientation (to measure direction) · 📷 Camera (the viewfinder —
nothing recorded or sent) · 📍 Location (the sky depends on where you are).
💡 Phone compasses can be a few degrees off:
if the name seems shifted, sweep slowly around the star — the right name is the one that
stays closest. For instrument-grade precision, calibrate below on a named star.