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Sky Map vs Star Walk 2: catalog facts
Sky Map	Star Walk 2
Free Free and open source under the GPL 3.0 or later licence.	Freemium A free version is offered on Google Play; paid options are not detailed in the research.
Android	Android, iOS
Real-time identification using the phone's sensors Long history, maintained by the original developers	Real-time sky map based on your location Tracks satellites such as the ISS and Starlink
The classic interface looks dated, as the developers acknowledge Accuracy depends on the phone's compass and sensors	Mobile only, no desktop version Closed source
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0-or-later	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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