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OmniOutliner vs Checkvist: catalog facts
OmniOutliner	Checkvist
Paid One-time purchase or subscription covering all Apple platforms, with a 14-day free trial.	Freemium A free plan is offered, with paid plans for more features.
macOS, iOS	Web, Browser extension
Columns, including smart columns for calculations Attachments inside outlines	Keyboard shortcuts for nearly every action, plus a command palette Unlimited hierarchy with filtering and quick navigation
Apple platforms only Paid after the trial	Runs as an online service rather than a local app Outline-only structure may feel limiting for long-form writing
Downloadable app	Web application, Hosted service, Browser extension
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 24, 2026	Official website Full listing and sources Checked September 24, 2026

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