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SkySafari vs Cartes du Ciel (SkyChart): catalog facts
SkySafari	Cartes du Ciel (SkyChart)
Paid Commercial app sold through the developer's store and app stores.	Free Free software under the GPL.
Android, iOS	Windows, macOS, Linux
Telescope control over ASCOM Alpaca, INDI and Celestron WiFi Plate solving to place your own astrophotos on the chart	Uses many star and deep-sky catalogues Shows planets, asteroids and comets
Paid and closed source Many features are aimed at telescope owners rather than casual stargazers	The number of settings can overwhelm casual stargazers Interface is functional rather than polished
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL
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 2, 2026

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