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Cosmovisor vs Sky Map: catalog facts
Cosmovisor	Sky Map
Free Free and open source under GPL-3.0-or-later.	Free Free and open source under the GPL 3.0 or later licence.
Android	Android
Satellite positions overlaid on the camera view Pass predictions and optional alerts	Real-time identification using the phone's sensors Long history, maintained by the original developers
Needs downloaded orbital data for current satellite information Android only	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-3.0-or-later	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 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.