# appscreen

> Open-source generator for App Store screenshots with 3D device mockups

appscreen is a free, browser-based tool for designing App Store marketing screenshots. It lets you customize backgrounds, add text overlays, and position device frames at 3D angles using WebGL mockups. It eliminates the need for complex design software when preparing app listing assets.

Website: https://github.com/YUZU-Hub/appscreen

## What it is for

- Generate App Store and Play Store marketing screenshots directly in the browser
- Render mobile app UI inside angled 3D device mockups
- Translate screenshot headlines and descriptions into multiple languages
- Export formatted image sets ready for app store submissions

## Features

- 3D device mockup rendering using Three.js with customizable angles and frame colors
- Support for both iPhone and Android phone models
- Customizable background gradients, text overlays, and Lucide icons
- AI-assisted headline generation and multi-language translation integration
- IndexedDB local persistence with project import and export
- Runs entirely in the browser via GitHub Pages with no account required

## Pricing

Open source. Free and open source (MIT license)

## Details

- Type: GitHub repo
- Category: [Development](https://xiry.app/topics/development.md)
- Topic: [App Store Optimization](https://xiry.app/topics/marketing-sales/app-store-optimization.md)
- Open source: yes
- Platforms: Web
- For: Mobile app developers and indie hackers
- Alternative to: AppMockUp, Screenshots Pro, Rotato
- Tags: app store, screenshots, mockups, design tools, ios dev, indie dev

## Why it was saved

- [@tom_doerr, 26 December 2025](https://x.com/tom_doerr/status/2004616272844087678): App Store screenshots are required marketing assets and are usually painful to assemble by hand; this tool automates the mockup and layout work in the browser for free.

## Compare

- [Alternatives to Rotato](https://xiry.app/alternatives/rotato.md)

## Related

- [5-Step ASO Keyword-First App Validation Framework](https://xiry.app/resources/5-step-aso-keyword-first-app-validation-framework): A repeatable playbook to validate app demand using ASO before writing code. (Tip, Free)
- [App Store Approval Checklist](https://xiry.app/resources/app-store-approval-checklist): Practical rules and common rejection triggers for iOS App Store submissions (Tip, Free)
- [ASO Research-First App Building Playbook](https://xiry.app/resources/aso-research-first-app-building-playbook): A framework for validating app ideas using app store optimization before coding (Tip, Free)
- [Claude MCP Directory Listing Playbook](https://xiry.app/resources/claude-mcp-directory-listing-playbook): Tactics for getting Model Context Protocol servers listed and recommended in Claude (Tip, Free)
- [greenlight](https://xiry.app/resources/greenlight): Pre-submission compliance scanner for App Store and Google Play guidelines. (Web app, Open source)
- [Opensource UI](https://xiry.app/resources/opensource-ui): Free copy-paste React and Next.js components and device mockups (Web app, Open source)

Updated 10 October 2026. Page: https://xiry.app/resources/appscreen

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