ReVanced Web Patcher - Backend Service

October 23, 2025 · View on GitHub

A local API service for patching Android APKs with ReVanced patches. This backend processes everything on your machine - your APKs never leave your system.

Screenshot of the web interface showing patch options and log output

Overview

This is the backend service that powers the ReVanced web patcher. It provides a REST API for:

  • Loading and analyzing patch bundles (.rvp files)
  • Checking APK compatibility with patches
  • Applying patches to APKs
  • Signing patched APKs
  • Real-time progress tracking via Server-Sent Events

Official Frontend

The official web interface is hosted at https://rv.aun.rest (closed source, ad-supported).

How to Use

  1. Run this backend locally (see instructions below)
  2. Visit rv.aun.rest in your browser
  3. Enter your backend URL (default: http://localhost:3000)
  4. Patch your APKs - all processing happens locally on your machine

The official frontend is supported by non-intrusive ads, which help fund continued development while preserving your privacy.

Requirements

Quick Start

Download the installer for your platform from Releases:

  • Windows: ReVanced-Web-Patcher.exe - Double-click to install
  • macOS: ReVanced-Web-Patcher.pkg - Double-click to install (bypass security warning in System Preferences → Security & Privacy)
  • Linux (Ubuntu/Debian): revanced-web-patcher.deb - sudo dpkg -i revanced-web-patcher.deb
  • Linux (Fedora/RHEL): revanced-web-patcher.rpm - sudo rpm -i revanced-web-patcher.rpm
  • Linux (Universal): ReVanced-Web-Patcher.AppImage - chmod +x *.AppImage && ./ReVanced-Web-Patcher.AppImage

All installers include Java 17 - no separate installation needed!

After installing, the server will be available at http://localhost:3000. Visit https://rv.aun.rest to use it.

Android

For mobile users, download the Android app:

  1. Get revanced-web-patcher.apk from Android Releases
  2. Install the APK (enable "Install from unknown sources")
  3. Open app → Tap "Start Server"
  4. Visit https://rv.aun.rest in browser
  5. Configure server URL: http://localhost:3000

Development

Build from Source

./gradlew build

Run Locally (Development)

./gradlew run

Or use the Gradle wrapper to build a distribution:

./gradlew installDist

Output will be in build/install/web-patcher-service/

Environment Variables

  • PORT - Server port (default: 3000)
  • ALLOWED_ORIGINS - Comma-separated allowed origins for CORS (default: allows all)
  • AAPT2_BINARY - Path to custom aapt2 binary (optional)

Docker

docker build -t revanced-patcher-backend .
docker run -p 3000:3000 revanced-patcher-backend

Project Structure

src/main/kotlin/
├── app/revanced/webpatcher/
│   ├── Application.kt              # Main server setup, CORS, routing
│   ├── routing/
│   │   └── PatchRoutes.kt         # API endpoints
│   ├── service/
│   │   ├── PatchService.kt        # Core patching logic
│   │   └── PatchMetadataService.kt # Patch analysis
│   ├── model/                     # Data models
│   ├── PatchJobRegistry.kt        # Job tracking & events
│   ├── Errors.kt                  # Error handling
│   ├── JsonMapper.kt              # JSON serialization
│   └── OptionParser.kt            # Patch option parsing

License

This backend is licensed under GNU Affero General Public License v3.0 (AGPL-3.0).

This means:

  • ✅ You can use, modify, and distribute this software
  • ✅ You must disclose source code of any modifications
  • ✅ You must use the same AGPL-3.0 license for derivatives
  • ❌ You cannot use this for commercial services without releasing your source code
  • ❌ If you run a modified version as a web service, you must make the source available

See LICENSE for full details.

Important: The official web frontend at rv.aun.rest is NOT covered by this license. It is proprietary and closed source.

Support

Disclaimer

This software is provided for educational purposes. The authors are not responsible for any misuse or damage caused by this program. Always respect application terms of service and applicable laws.