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Star Walk 2Stellarium
Freemium

A free version is offered on Google Play; paid options are not detailed in the research.

 Free

Free and open source under the GPL 2.0, funded by donations and sponsorship.

Android, iOS Windows, macOS, Linux, Android, iOS
  • Real-time sky map based on your location
  • Tracks satellites such as the ISS and Starlink
  • Accurate sky for any location, date and time
  • Simulates the view through binoculars, telescopes and specific eyepieces
  • Mobile only, no desktop version
  • Closed source
  • The three-dimensional rendering needs a reasonable graphics card
  • Default catalogues are limited until you download the extra ones
Downloadable app Downloadable app
Closed source Open source
License not stated License: GPL-2.0
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked October 2, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.