kacperkapusciak/goldie

✨ agentic app store previews and screenshots

What it solves

Goldie automates the creation of App Store and Google Play screenshots and preview videos. It removes the manual effort of taking captures, framing them with device bezels, adding backgrounds and headlines, and ensuring the result meets the specific upload rules of the app stores.

How it works

Goldie uses the argent tool to replay user flows on iOS simulators or Android emulators to capture the app's interface. It then frames these captures with device bezels, backgrounds, and headlines. For videos, it joins clips into a preview video. It is framework-agnostic, working with SwiftUI, UIKit, Jetpack Compose, Flutter, React Native, and Kotlin Multiplatform apps.

Who it’s for

Mobile app developers and coding agents (such as Cursor, Codex, or Claude Code) that need to generate professional store assets for iOS and Android platforms.

Highlights

  • Agent-Ready: Specifically designed to be added as a skill for coding agents to automate the store asset generation process.
  • Cross-Platform: Supports both iOS and Android (Pixel 10 Pro) devices.
  • Cross-Framework: Works with any mobile framework regardless of the same underlying simulator/emulator.
  • Visual Studio: Includes a browser-based studio for previewing and tweaking assets, saving choices to a design JSON file.
  • Compliance: Automatically checks results against store upload rules.

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