Compare software

Sky MapCosmovisor
Free

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

 Free

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

Android Android
  • Real-time identification using the phone's sensors
  • Long history, maintained by the original developers
  • Satellite positions overlaid on the camera view
  • Pass predictions and optional alerts
  • The classic interface looks dated, as the developers acknowledge
  • Accuracy depends on the phone's compass and sensors
  • Needs downloaded orbital data for current satellite information
  • 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 No account 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.