Developer Tools
RegEx Lab: Regular Expressions
RegEx Lab tests regular expressions with highlighted matches, capture groups and replacement results.
Choose it for trying a pattern against sample text before using it elsewhere.
A results list, operator cheatsheet and import or export tools support repeated experiments.
Keep in mind: Regex engines can differ, so a successful example here does not guarantee identical behavior in every language or platform.
Inside the app
Official product images
What you can do
- Pattern and capture highlighting
- Match list and replacement
- Cheatsheet, undo and file exchange
Good for
- Developers refining regular-expression patterns
Consider alternatives for
- Anyone expecting a complete programming runtime
Limitations & considerations
- Captured minimum: iOS 14.0.
- Regex engines can differ, so a successful example here does not guarantee identical behavior in every language or platform.
Privacy & permissions
Sample text can contain private records or credentials; use sanitized examples and inspect export destinations.
Sources & review notes Updated Nov 11, 2026
Reviewed by iApp4Me Editorial Team. Recommendations use the linked documentation and attributed accounts; device observations are identified separately.
- US App Store developer description
Complete description, download price and compatibility metadata captured 2026-11-02.
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