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Pinwheel vs Leonardo: catalog facts
Pinwheel	Leonardo
Paid $9 USD plus tax, with a 30-day free trial.	Free Free to use in the browser, with source published on GitHub.
macOS	Web
OKLCH and OKLAB gradients without muddy midpoints Automated contrast testing	Generates swatches from target contrast ratios Adaptive themes make dark mode variants quick
macOS 15 or later only Paid after the trial	Aimed at design systems work, more than a simple palette picker needs Contrast-driven approach takes some learning
Downloadable app	Web application
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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