# Tap & Trace

> Tap & Trace (TapNTrace) is an on-device mobile developer browser for Android that brings desktop Chrome DevTools functionality directly to your phone without requiring ADB, USB cables, or a desktop computer.

## Overview
Tap & Trace enables web developers, QA engineers, and mobile testers to inspect DOM trees, edit HTML/CSS in real time, execute JavaScript expressions in an interactive console REPL, monitor network requests with timing waterfalls, and export requests as cURL commands—all directly on an Android device.

- **Developer:** RenX Labs Pvt. Ltd.
- **Platform:** Android (Android 8.0 Oreo and above)
- **License / Pricing:** Free & Open-Source (v1.0)
- **Privacy:** 100% On-Device execution; zero telemetry or network interception to external servers.

## Core Features
- **Tap-to-Inspect DOM:** Tap any element on the mobile viewport to highlight its bounding box, view its computed dimensions (box model), and navigate the DOM parent/child/sibling hierarchy.
- **Live HTML & CSS Editor:** Modify element attributes, text contents, classes, and inline styles on the fly with immediate visual rendering.
- **Interactive JS Console REPL:** Full JavaScript execution environment with syntax highlighting, history navigation, object inspection, and error stack traces.
- **Network Waterfall & Profiler:** Real-time HTTP/HTTPS request monitoring showing status codes, request/response headers, MIME types, duration, payload size, and 1-tap "Copy as cURL".
- **Storage & Cookie Explorer:** Inspect and modify LocalStorage, SessionStorage, and cookie key-value pairs directly in the app.
- **Device & User-Agent Emulation:** Switch between desktop and mobile viewport presets or custom user-agent headers.

## Documentation & Guides
- [User Guide & Tutorial](https://tapntrace.renxlabs.in/how-to-use.html): Step-by-step walkthrough covering DOM inspection, live CSS tweaks, JavaScript debugging, and network waterfall analysis.
- [Full LLM Context (llms-full.txt)](https://tapntrace.renxlabs.in/llms-full.txt): Complete uncompressed documentation, technical architecture, and FAQs optimized for LLM consumption.
- [Official Website](https://tapntrace.renxlabs.in/): Product landing page, feature highlights, and interactive simulator.

## Download & Source Code
- [Download Universal APK (v2.0)](https://tapntrace.renxlabs.in/downloads/tapntrace-v2.0.0.apk): Direct download of universal signed Android APK without Google Play Services requirement.
- [GitHub Repository](https://github.com/parakhinfo/tapntrace-android): Open-source repository, issue tracker, and contribution guide.