Compare software

StellariumSkySafari
Free

Free and open source under the GPL 2.0, funded by donations and sponsorship.

 Paid

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

Windows, macOS, Linux, Android, iOS Android, iOS
  • Accurate sky for any location, date and time
  • Simulates the view through binoculars, telescopes and specific eyepieces
  • Telescope control over ASCOM Alpaca, INDI and Celestron WiFi
  • Plate solving to place your own astrophotos on the chart
  • The three-dimensional rendering needs a reasonable graphics card
  • Default catalogues are limited until you download the extra ones
  • Paid and closed source
  • Many features are aimed at telescope owners rather than casual stargazers
Downloadable app Downloadable app
Open source Closed source
License: GPL-2.0 License not stated
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked September 21, 2026

Checked October 2, 2026

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