iOS app

A live sky you can identify tonight

Star map · astronomy

The first screen is the sky itself. Instruments sit on the map — Tonight, Eclipse, Learn, and Settings — not a tab bar of destinations. Search finds objects. Hold-up is compass and gyroscope on the drawn map.

Download on the App Store

Sky map and instruments

  • Sky map Live stereographic sky for your location, or a manual latitude and longitude. Naked-eye catalog (magnitude 5) with all 88 IAU constellation names. Pan, pinch, scrub time. Visible clips at the horizon; Browse dims objects below it.
  • Tonight Meteor-shower peaks and bright conjunctions as factual event cards. Observation planning for your horizon: twilight bands, ranked targets, best-now, and Moon-wash — what the Moon will drown tonight.
  • Eclipse Next solar and lunar geocentric candidates, countdown, diagrams, show on map. Local circumstance when you subscribe: visible here, magnitude, path-vs-you, and a NASA GSFC / Espenak Earth path ribbon. A miss is not upgraded into a backyard forecast.
  • Learn Graphics-first topics from the live sky — diagrams and short Help popups, not encyclopedia essays. Positions use VSOP87 (Sun and planets) and Meeus (Moon). ISS uses SGP4 from a TLE; age is shown.

Identify what you see

Hold-up turns the drawn map with compass heading and motion pitch. Night-vision red mode spares dark adaptation. There is no camera viewfinder and no AR overlay in this version.

Hold-up Search Night vision Pin

Tap to select; long-press opens Object detail. Pin targets for tonight. Sky math stays on your iPhone.

Free and Premium

Free

See the sky

  • Live map to magnitude 5 (1,625 Hipparcos) and all 88 IAU names
  • Hold-up identify and night-vision red mode
  • M31, M42, M45 · ISS next-pass teaser (no clock or overlay)
  • Geocentric eclipse candidates and diagrams
  • Meteor / conjunction event cards · pin targets
  • Time scrub ±24 hours inline · ±7 days in the Time panel
  • No account. Catalogs and logs stay on this iPhone

Premium

$4.99/mo · $39.99/yr

  • About 42,000 stars to magnitude 8 · about 120,000 to magnitude 9
  • Tonight Observe — twilight, ranked targets, Moon-wash
  • Messier 110 · ISS overlay and timetable (SGP4)
  • Local eclipse circumstance and NASA Earth path ribbon
  • Confirmed exoplanet-host layer (about 2,000) · full stick figures + IAU boundaries
  • Deep scrub, bookmarks, rise/set trails, light log

Auto-renewable through Apple. Manage in Settings → Apple ID → Subscriptions. Restore purchases from Instruments → Settings → Subscription in the app.

Free shows you the sky. Premium helps you observe it — same engines, more of the catalog and planning. No account required on either plan. Observe alerts are Premium and default off.

Education note: StellarVana is astronomy education and observation planning. It is not astrology, not a photographer’s shot planner, and not medical or professional advice.