# CodeCheck > Professional Regex tester and JSON formatter: real-time, precise, and powerful. Canonical page: [https://chrome-stats.com/d/com.zzsr.codecheck](https://chrome-stats.com/d/com.zzsr.codecheck) ## Overview - **ID:** `com.zzsr.codecheck` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** Hongkong Tianyiyun Technology Limited - **Category:** TOOLS - **Downloads:** 3,663 - **Version:** 1.0.2 - **Last updated:** 2026-05-22 - **First published:** 2026-05-05 - **Publisher country:** HK - **Size:** 69 MB - **Data as of:** 2026-09-12 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.zzsr.codecheck) - **Website:** [http://yuetw.cn](http://yuetw.cn/) - **Privacy policy:** [https://aiapi.hy0920.com/html\_article/56/301.html](https://aiapi.hy0920.com/html_article/56/301.html) ## Description 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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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! ## Rankings - #791,596 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_ADSERVICES_TOPICS` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.ACCESS_WIFI_STATE` - `android.permission.FOREGROUND_SERVICE` - `android.permission.INTERNET` - `android.permission.READ_PHONE_STATE` - `android.permission.RECEIVE_BOOT_COMPLETED` - `android.permission.VIBRATE` - `android.permission.WAKE_LOCK` - `com.android.vending.CHECK_LICENSE` - `com.applovin.array.apphub.permission.BIND_APPHUB_SERVICE` - `com.google.android.gms.permission.AD_ID` - `com.zzsr.codecheck.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` ## Similar extensions and apps - [Developer Tools & JSON Editor](https://chrome-stats.com/d/com.developertools.jsonvalidator) — 127 users - [CodeToolbox](https://chrome-stats.com/d/app.lovable.devtoolbox) — 27 users - [JSON Formatter & Dev Tools](https://chrome-stats.com/d/ts.hexabytes.devtoolkit) — 43 users - [CodeText Toolkit](https://chrome-stats.com/d/com.analytics.codetext.toolkit.tools) — 32 users - [Json Tool Suite](https://chrome-stats.com/d/com.appetenza.jsontoolsuite) — 119 users - [JSON Formatter Pro](https://chrome-stats.com/d/com.mmf.jsonformatter) — 6 users - [Regex Studio](https://chrome-stats.com/d/com.yasein.regexstudio) — 4 users - [DevKit: JSON, JWT & Dev Tools](https://chrome-stats.com/d/app.devkitpro.android) — 35 users - [FormatCheck JSON & XML Studio](https://chrome-stats.com/d/com.codewharf.formatcheckpro) — 2 users - [Pocket Regex](https://chrome-stats.com/d/com.wanstudios.pocketregex) — 8 users - [JSON Viewer & Editor 2026](https://chrome-stats.com/d/com.prettyjson.android) — 440 users - [SH5Ache Core](https://chrome-stats.com/d/com.jsonbeautifierappsf) — 560 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.zzsr.codecheck)