Greenlight

Abstract

1. Introduction

Greenlight reads your app (source code, privacy manifests, Android manifests and Gradle builds, IPA binaries, App Store Connect metadata) and checks it against Apple's Review Guidelines and Google Play's Developer Program Policies. Every finding cites the rule it comes from. No account, no uploads, no network. A full preflight on a mid-size project finishes in single-digit milliseconds.

A static scan can only prove a flow exists. greenlight verify proves it works: it runs your account-deletion, restore-purchases, and Sign in with Apple flows on a cloud device and fails the build if any of them dead-ends. That tier is powered by Revyl and needs a free account. Everything else on this page runs offline. See greenlight verify.

2. Objective

Pre-submission compliance scanner for the Apple App Store and Google Play. Scans code, privacy manifests, Android manifests, and IPA/APK/AAB binaries against the review guidelines. Offline, no account.

This project demonstrates how Go, Android, Expo can be applied to a real-world Mobile App Development problem.

4. Technology Stack

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

• Go 1.20 or later
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/RevylAI/greenlight.git
cd greenlight

# Homebrew (macOS)
brew install revylai/tap/greenlight

# Go
go install github.com/RevylAI/greenlight/cmd/greenlight@latest

# Build from source
git clone https://github.com/RevylAI/greenlight.git
cd greenlight && make build
# Binary at: build/greenlight

# Everything, one command, zero uploads
greenlight preflight /path/to/your/project

# Include an IPA for binary analysis
greenlight preflight . --ipa build.ipa

# Gate CI on it
greenlight preflight . --exit-code

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

• Add push notifications with Firebase Cloud Messaging
• Add offline support with local caching
• Publish an internal test build on the Play Store

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

1. Which framework is used and why (native vs cross-platform)?
2. How is app state managed across screens?
3. Where is the data stored — locally, Firebase or a REST backend?
4. How are permissions (camera, location, storage) handled?
5. How would you publish this app to the Play Store / App Store?

9. Source Code & License

This project is developed by RevylAI and published on GitHub under the MIT License. Please follow the license terms and credit the original author when you use or modify this code.