RegEX: Dev Tool

RegEX: Dev Tool is the ultimate on-device utility for anyone working with regular expressions—developers, DevOps engineers, data scientists, sysadmins or students.

Live Regex Tester
- Instant match highlighting as you type
- Multi-line editor with numbered match indicators
- Inline flag toggles (i, m, s, x, u) and descriptive tooltips
- Error-safe compilation feedback for invalid patterns
Pattern Library
- Save custom patterns with names & tags
- Quick search across names, patterns & tags
- Import/export entire collections via JSON
Comprehensive Reference Guide
- Categorized sections (Anchors, Quantifiers, Groups, Classes…)
- Real-world examples (email, IP, URL…)
- “Try in Tester” one-tap loading of any token into the tester
- Tag-based filtering and cross-category search
Powerful Share & Export
- Copy matches, full results or JSON test reports
- Native iOS share sheet for text or file formats
- Drag-and-drop and clipboard support (privacy compliant)
Privacy-First Design
- All data stored locally (no analytics, no network access)