CodeCheck

Hongkong Tianyiyun Technology Limited

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About this app

CodeCheck: The Ultimate Developer’s Pocket Toolset

CodeCheck is a high-performance utility designed specifically for developers, QA engineers, and data analysts. Say goodbye to desktop-only debugging—now you can validate patterns and structure data anytime, anywhere with a sleek, professional interface.

Core Features:

1. Professional Regex Tester

Real-time Matching: Get instant visual feedback as you type your expressions and test strings.

PCRE & JavaScript Support: Switch between engines to ensure your patterns work in any environment.

Complexity & Performance: Built-in execution time tracking and
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(
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O(n)
complexity analysis to help you optimize your expressions.

Replace Mode: Test your substitution logic with live previews.

Detailed Capture Groups: Visualize match positions and captured groups at a glance.

2. Smart JSON Formatter & Parser

One-Tap Formatting: Transform messy JSON strings into beautifully indented, readable code.

Tree & Text Views: Switch between a powerful tree view (with expandable nodes) and a classic text editor.

Instant Validation: Detect syntax errors immediately with precise line/character location.

Minify & Escape: Compress JSON for production or escape characters for string literals.

3. Pattern Library

Access a curated collection of industry-standard regular expressions (Email, IP, URL, Date, etc.).

"Quick Apply" allows you to load any pattern directly into the tester with one tap.

4. History & Productivity

Local History: Never lose your work. Access your last 50+ Regex or JSON tasks.

Clipboard Integration: One-tap paste and copy for rapid workflows.

Syntax Highlighting: A premium, dark-mode-first experience with monospaced fonts optimized for mobile screens.

Whether you're debugging a backend API, validating user input, or just learning regular expressions, CodeCheck brings the power of a desktop IDE to your pocket.

Get CodeCheck today and make coding mobile-friendly!