Compare software

Sky MapAndroidPlanisphere
Free

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

 Free

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

Android Android
  • Real-time identification using the phone's sensors
  • Long history, maintained by the original developers
  • Charts over 9,000 stars and all eight planets
  • Supports arbitrary times and locations
  • The classic interface looks dated, as the developers acknowledge
  • Accuracy depends on the phone's compass and sensors
  • Android only
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0-or-later License: GPL-3.0-or-later
No account 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.