kacperkapusciak/goldie

What it solves

Goldie automates the creation of App Store screenshots and preview videos for iOS apps. It removes the manual effort of capturing, framing, and verifying assets against Apple's upload rules, regardless of whether the app is built with SwiftUI, UIKit, Flutter, React Native, or Kotlin Multiplatform.

How it works

Goldie integrates with Argent to replay app flows on a simulator. It then takes those captures and frames them with device bezels, backgrounds, and headlines. It can join clips into a preview video and provides a 'studio' for browser-based tweaking of assets. The final output is rendered via a CLI, with design choices saved to a JSON configuration file.

Who it’s for

Developers and coding agents (such as Cursor, Codex, or Claude Code) who need to generate professional App Store marketing assets for iOS applications.

Highlights

• Framework Agnostic: Works with any iOS app regardless of the framework used.
• Agent-Ready: Can be added as a skill to coding agents to automate the flow and config writing.
• Agentic Workflow: Coding agents can explore the app, write flows, and and edit design files based on natural language requests.
• Device Framing: Supports multiple device bezels (e.g., 17-pro) and various layout templates (e.g., editorial, showcase).
• Apple Compliance: Automatically checks results against Apple's upload rules.