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Acorn vs Seashore: catalog facts
Acorn	Seashore
Paid One-time purchase with no subscription, after a 14-day free trial.	Free Free and open source.
macOS	macOS
No subscription, paid once AI subject selection and Live Text tool built in	Native macOS interface Layers, brushes and effects for common editing tasks
macOS only Requires macOS 14 Sonoma or later	macOS only Fewer features than professional image editors
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
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 September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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