Regex Pattern Tester - Tool

Regex Pattern Tester is a fast, fully offline utility designed to help developers and students test, debug, and understand regular expressions without relying on online tools.

The app works completely on your device. No internet connection, no permissions, and no data collection.

Key features

Real-time regex matching with instant highlights

Find and replace with capture group support ($1, $2, etc.)

Instant pattern validation with clear error messages

Built-in library of common regex patterns (email, URL, date, phone, and more)

Searchable history saved locally on your device

Export results as plain text, HTML, JSON, or Markdown

Built-in regex cheat sheet for quick reference

Clean Material 3 interface with light and dark themes

Privacy-first design

Works completely offline

No internet access required

No ads or trackers

No permissions needed

All data stays locally on your device

Who this app is for

Developers testing and debugging regex patterns

Students learning regular expressions

System administrators working with logs and text data

Writers and editors using pattern-based text replacement

Technical details

Android 6.0 and above

Small app size

English language

No background services

Regex Pattern Tester is a simple, reliable, and private tool for anyone who needs accurate regex testing anytime, anywhere.

Support

If you have questions or feedback, contact us at:

[email protected]