Compare software

Star Walk 2AndroidPlanisphere
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-3.0-or-later license.

Android, iOS Android
  • Real-time sky map based on your location
  • Tracks satellites such as the ISS and Starlink
  • Charts over 9,000 stars and all eight planets
  • Supports arbitrary times and locations
  • Mobile only, no desktop version
  • Closed source
  • Android only
Downloadable app Downloadable app
Closed source Open source
License not stated License: GPL-3.0-or-later
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Works offline

Checked October 2, 2026

Checked October 8, 2026

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