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Cosmovisor vs Star Walk 2: catalog facts
Cosmovisor	Star Walk 2
Free Free and open source under GPL-3.0-or-later.	Freemium A free version is offered on Google Play; paid options are not detailed in the research.
Android	Android, iOS
Satellite positions overlaid on the camera view Pass predictions and optional alerts	Real-time sky map based on your location Tracks satellites such as the ISS and Starlink
Needs downloaded orbital data for current satellite information Android only	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
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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