I built a 5-phase design system that turns "I have an app idea" into a TDD prompt
Pranav Chandra developed a 5-phase design system called App Architect that transforms a simple app idea into a detailed, production-ready prompt for AI coding tools. The system guides users through structured phases including user flows, page mapping, system design, and test-driven development (TDD) to improve the quality of AI-generated code. It aims to bridge the gap between vague app ideas and functional implementation by enforcing thorough planning before code generation.
- ▪App Architect is a Claude artifact that structures the app development process into five phases: App Flow, Page Map, System Design, Executive Summary, and TDD Prompt.
- ▪The final output is a TDD prompt that includes unit tests, end-to-end tests, and CI configuration to ensure reliable code generation.
- ▪The tool runs entirely within the user's Claude account, with no data collection or sign-up required by the creator.
- ▪A key goal of App Architect is to prevent poorly defined prompts from generating code that compiles but fails to meet actual user needs.
- ▪The current version focuses on web applications and does not yet support CLI tools, MCP servers, or libraries natively.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 583635) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Pranav Chandra Posted on May 1 I built a 5-phase design system that turns "I have an app idea" into a TDD prompt #claude #ai #webdev #productivity App Architect walks you from a one-line idea to a production-ready prompt — user flow, page map, system design, spec, and tests. Here's why I built it and how it works.
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