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Regex vs Expressions: catalog facts
Regex	Expressions
Paid The Mac App Store page lists Regex for US$13.99.	Paid Commercial Mac app from Apptorium; see the website for current pricing.
macOS	macOS
Saves patterns, test data, replacements and options together Supports duplicating saved tests to explore variants	Live preview of matches while editing Library for saving expressions
Requires macOS 14.2 or later	macOS only Not open source
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
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

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