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