Compare software

AndroidPlanisphereSky Map
Free

Free and open source under the GPL-3.0-or-later license.

 Free

Free and open source under the GPL 3.0 or later licence.

Android Android
  • Charts over 9,000 stars and all eight planets
  • Supports arbitrary times and locations
  • Real-time identification using the phone's sensors
  • Long history, maintained by the original developers
  • Android only
  • The classic interface looks dated, as the developers acknowledge
  • Accuracy depends on the phone's compass and sensors
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0-or-later License: GPL-3.0-or-later
Not stated if an account is needed No account needed
Works offline Not stated if it works offline

Checked October 8, 2026

Checked October 2, 2026

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