Twinkle Clock vs StarTrail

Twinkle Clock turns your screen into a night sky — a clock face made of twinkling stars and constellations. FREE • 12 zodiac constellations, swipe to switch • A twinkling starfield with the time overlaid on constellation lines PRO (one-time purchase) • All 88 official constellations • ~8,900 naked-eye stars across the whole sky • The Milky Way and the Moon & planets (Mercury–Saturn) • Nebulae, star clusters, and galaxies • Tap any star, the Moon, or a planet to read about it • Time Travel — pick any date and time to see what the sky looked like (or will look like) • Major meteor shower activity windows Available on iPhone, iPad, Mac, Apple TV, and Apple Vision Pro.

StarTrail turns your phone into an AR window on the night sky. Lift your phone and StarTrail overlays the stars, planets, constellations and the Moon exactly where they are — all computed on-device, so the core works with no internet and no account. • AR Sky View — point at the sky and identify what you see • Sky Map — pan and search the whole sky any time • Tonight — what's visible now, moon phase, twilight times • Events — meteor showers, conjunctions, eclipses with reminders • Dark-Sky Planner — light-pollution map and the best spots to escape city glow • Observation Log — record what you saw, with photos No server, no tracking. Your location stays on your device.