Live highlighting
See each match in context as you edit your expression.
MAC · IPHONE · IPAD · APPLE VISION PRO
Your regex.
Your text stays here.
Test Foundation/ICU patterns, inspect capture groups and preview replacements. Everything runs on your device.
One-time purchase · No subscription · See your local price on the App Store
- On-device processing
- No account
- No ads
From text to results
Find. Check.
Replace.
Three practical examples to copy into the app. Each guide includes the pattern, sample text and expected output.
Capture groups
Inspect captured values and positions, then use $1 and $2 in a replacement.
History and exports
Keep your patterns in favorites and export results as JSON or CSV.
FOUNDATION · ICU
A native tool.
Across your Apple devices.
Work on Mac, with the same core tools on iPhone and iPad. History is local to each device; it does not sync automatically.
MaciPhoneiPadVision Pro
Privacy
Your text stays
on your device.
Patterns, sample text and results are processed locally. No account, advertising or tracking in the app.
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Need a hand?
Found an issue or have a suggestion? Contact the developer directly.
Contact support ↗Which regex engine does it use?+
NSRegularExpression, Apple’s Foundation/ICU engine. This is not the Swift Regex engine. Syntax may differ from JavaScript, Python or PCRE.