RegexLab: Regex Tester
Live Regex Tester
$1.99 · Designed for iPad. Not verified for macOS.
Type a pattern, watch matches highlight live. Groups, replace preview, cheatsheet.
RegexLab is a live regular-expression workbench for your iPhone and iPad: type a pattern, paste your test text, and watch matches light up as you type.
SEE MATCHES INSTANTLY
Every keystroke re-runs your pattern against the test text with live highlighting, a match count, and a list of every capture group — no run button, no waiting.
REPLACE WITH CONFIDENCE
Preview replacements with template support ($1, $2 and friends) before you commit them in your codebase.
FLAGS AND CHEATSHEET BUILT IN
Toggle case-insensitive, multiline, and dot-matches-newlines. A built-in cheatsheet covers the tokens everyone forgets, plus ready-made sample patterns for emails, URLs, phone numbers, and IP addresses.
SAVE YOUR GOOD ONES
Keep a library of patterns that took you twenty minutes to get right, so next time it takes zero.
Everything runs on-device with no network access — your test data stays yours. No account, no ads, no subscription. Pay once.
Ratings & Reviews
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The developer, Omar Huertas, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Omar Huertas
- Size
- 1.2 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Omar Huertas LLC
