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Star Walk 2 vs Cosmovisor: catalog facts
Star Walk 2	Cosmovisor
Freemium A free version is offered on Google Play; paid options are not detailed in the research.	Free Free and open source under GPL-3.0-or-later.
Android, iOS	Android
Real-time sky map based on your location Tracks satellites such as the ISS and Starlink	Satellite positions overlaid on the camera view Pass predictions and optional alerts
Mobile only, no desktop version Closed source	Needs downloaded orbital data for current satellite information Android only
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	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

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