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SkySafari vs KStars: catalog facts
SkySafariKStars
Paid

Commercial app sold through the developer's store and app stores.

Free

Free and open source from the KDE community.

Android, iOS Windows, macOS, Linux
  • Telescope control over ASCOM Alpaca, INDI and Celestron WiFi
  • Plate solving to place your own astrophotos on the chart
  • Sky simulation with up to 100 million stars, plus comets and asteroids
  • Observation planner and calculation tools such as conjunction prediction
  • Paid and closed source
  • Many features are aimed at telescope owners rather than casual stargazers
  • The large feature set takes time to learn
  • Some information and imagery features rely on internet resources
Downloadable app Downloadable app
Closed source Open source
License not stated License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked October 2, 2026

Checked September 23, 2026

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