Stargaze
Point your phone at the sky.
Know every star.
Stargaze is an AR planetarium for iPhone. Identify every visible star, plot the planets, track the ISS, and count down to the next eclipse — all computed on your device. No accounts, no ads, no tracking.
What's inside
AR sky overlay
9,000+ stars, 88 IAU constellations with mythology, every planet, sun & moon — registered to your phone's compass and gyroscope.
ISS pass alerts
Notification 10 minutes before the ISS, Hubble, Tiangong, and bright Starlink satellites cross your sky. SGP4 propagation, on-device.
Tonight's score
Cloud cover + moon phase + light pollution combined into a single 0–10 observing score with one-line reason. Lock-screen widget included.
Eclipse calendar
Every solar and lunar eclipse 2025–2028 with path and visibility. Live-Activity countdown to the 2026 and 2027 totals.
Red-light night mode
Pure-red palette protects your dark adaptation. Auto-engages 30 minutes after sunset.
Zero-cost engineering
Public-domain VSOP87 / SGP4 / Yale Bright Star Catalog. No paid APIs, no cloud, no tracking SDKs. Your location never leaves your iPhone.
Honest pricing
Free download. AR overlay is free forever. Pro at $3.99/month or $19.99/year (7-day free trial) unlocks the satellite tracking, observing score, full event calendar, and red-light mode. Pro+ at $7.99/month or $49.99/year (14-day trial) adds the Messier 110 + NGC catalog, observation log, and CloudKit sync.
Anti-features
No astrology. No telescope sales. No "AI astronomer chat" using a cloud LLM. No paywall on the basic AR overlay. No countdown timers. No tracking. No accounts required.
An app by Atrium · Developer: Zhang Jiahao