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Linearity Curve vs Sketch: catalog facts
Linearity Curve	Sketch
Freemium Free to start, with paid tiers for additional features.	Paid Paid subscription software.
macOS, iOS	macOS
Fast, touch-friendly workflow tailored to Apple devices Free tier available to start with	Long track record as a dedicated UI design tool Established plugin ecosystem
Mac and iOS only, no Windows or Linux support Advanced features require a paid plan	Mac only, no Windows or Linux version Paid subscription required
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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