A stargazing companion built on real astronomical computation, a real 8,900+ star catalogue, and real live space data — not approximations or placeholder content.
Every number on screen is computed or fetched from a live source — nothing in SkyPulse is hardcoded or simulated.
Sun, Moon, and all 7 planets positioned using real Keplerian orbital elements and sidereal-time rise/set/transit calculations — not linear approximations.
Imported from the HYG astronomical database (Hipparcos/Yale/Gliese), down to naked-eye visibility — real coordinates, magnitudes, and names.
Real device compass + tilt sensor fusion projects the sky through your phone like a window, with pinch-to-zoom and search-to-locate any object.
Illustrated constellation figures affine-warped onto their actual star positions — sourced from Stellarium's community sky-culture project.
Live TLE orbital data from CelesTrak, propagated with a validated SGP4 engine — no paid API key required, unlike most competitors.
A live stargazing score computed from real cloud cover, humidity, and wind data for your exact location tonight.
Live upcoming launches and space news pulled from Launch Library 2 and Spaceflight News API, cached and kept current automatically.
Actual eclipses (NASA catalogue) and meteor showers (computed by solar longitude) — not guessed dates.
The full feature list — one app, no in-app purchases, no paywalled sections.
A lot of free stargazing apps lean on canned data or paywall the useful parts. Here's where SkyPulse stands.
| Feature | SkyPulse | Typical free stargazing app |
|---|---|---|
| Satellite tracking | Free, no key needed | Often requires a paid API key |
| Star catalogue depth | 8,921 real stars | Often a few hundred, hardcoded |
| Constellation art alignment | Real star-anchored warp | Often a fixed decorative overlay |
| Stargazing conditions | Live weather-based score | Rarely included |
| Offline resilience | Cached fallback across the app | Varies |
| Search-to-locate objects | Any star, planet, or constellation | Often objects only |