Compare software

Stellarium vs Sky Map: catalog facts
Stellarium	Sky Map
Free Free and open source under the GPL 2.0, funded by donations and sponsorship.	Free Free and open source under the GPL 3.0 or later licence.
Windows, macOS, Linux, Android, iOS	Android
Accurate sky for any location, date and time Simulates the view through binoculars, telescopes and specific eyepieces	Real-time identification using the phone's sensors Long history, maintained by the original developers
The three-dimensional rendering needs a reasonable graphics card Default catalogues are limited until you download the extra ones	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-2.0	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 2, 2026

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