Capacity
Build full-stack web apps with AI — describe it, ship it
Founded
2024
Starting Price
$0
Category
Developer Tools
Last updated March 4, 2026
About Capacity
Capacity is an AI-powered platform for building full-stack web applications without coding expertise. Describe your app idea in natural language and Capacity generates production-ready code with React/TypeScript frontends, Express backends, and SQLite databases. Choose between quick prototyping (Vibe Mode) or detailed specification-first development (Spec Mode).
Pros & Cons
Pros
- Generates complete full-stack apps from natural language descriptions
- Two modes (Vibe + Spec) for different development approaches
- No vendor lock-in — export code to GitHub anytime
- Credits never expire — no wasted subscription fees
- Spec-first approach produces more robust, production-ready code
Key Features
Vibe Mode
Quick prototyping — describe your idea and get a working app in minutes through natural language.
Spec Mode
Detailed planning-first approach with structured project briefs, UX flows, and user stories before code generation.
Full-Stack Generation
Generates React/TypeScript frontends with Express backends and SQLite databases automatically.
AI Co-founder
Strategic AI assistant that provides guidance, code suggestions, and architectural advice throughout development.
Code Export
Export your code to GitHub or download directly — no vendor lock-in, you own everything.
One-Click Deploy
Publish your app to a live URL with custom domain support in a single click.
Design System Generation
AI creates consistent design systems with components, colors, and typography for your app.
Pricing
Free
$0
- Limited credits to start
- Full-stack generation
- Code export
- Community support
Credit Packages
Varies
Best For
MVP Development
Go from idea to working prototype in hours, not weeks — perfect for validating startup concepts.
Internal Tools
Build custom dashboards, admin panels, and workflow tools for your team without hiring developers.
Solo Founder Projects
Non-technical founders can build and launch web apps independently with AI as their technical co-founder.
Rapid Prototyping
Create clickable, functional prototypes to present to stakeholders or investors before committing to full development.
