Capacity

Transform your idea into a production-ready full-stack web app in minutes.

💰Starting from $25/month ★★★★½ 4.6/5 (68 opinion)

Code & Development No-code & Automation

#Code Generation #No-code

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Overview of Capacity

https://capacity.so

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Présentation détaillée

Capacity.so is an __AI web application builder__ that adopts a unique __spec-first methodology__: before generating code, it asks the user to define a complete project brief and precise user stories. This allows its agentic engine to produce clean __TypeScript/Next.js/Supabase__ code aligned with business logic. Unlike other vibe-coding tools, __the code is entirely yours__: GitHub export or direct download with no vendor lock-in. Plans starting at __$25/month__ for 100 credits, with options up to $299/month for enterprises.

What is Capacity?

Capacity.so is an AI-powered full-stack web application builder. Its distinguishing feature is its spec-first methodology: before generating any code, the platform guides you through writing a complete project brief and granular user stories. Its agentic engine then processes these specifications to generate coherent TypeScript code, aligned with your business logic, and immediately deployable.

Main Features

Capacity.so generates complete applications in TypeScript with Next.js for the frontend, Supabase for the backend and database, Tailwind CSS for design, and tRPC or REST APIs. Agentic Mode orchestrates the entire application generation in one session. Full code export to GitHub or direct download guarantees complete intellectual property ownership. Higher plans include custom domains, dedicated support, and early access to new features.

Use Cases

Capacity.so excels at rapidly scaffolding MVPs (Minimum Viable Products) for startups or freelance projects. Agencies use it to produce client prototypes in record time. Solo developers accelerate the initial phase of their personal or professional projects. Non-technical founders with a clear product vision can delegate the initial code generation while maintaining control over the result.

Advantages

Capacity.so drastically reduces the time to scaffold a complete web application, from several days to a few hours. The quality of generated code, thanks to the spec-first approach, is superior to most vibe-coding tools. No vendor lock-in preserves users’ technical freedom. The credit system lets you pay only for what you use.

Pricing

Capacity.so offers four plans: Starter at $25/month (100 credits), Growth at $69/month (250 credits, popular), Professional at $129/month (500 credits), and Enterprise at $299/month (1,000 credits). Each plan includes full Agentic Mode access. Additional credits can be purchased separately.

Conclusion

Capacity.so is one of the most serious code generation AI tools thanks to its spec-first approach. For developers and founders wanting to scaffold quickly without sacrificing quality, it’s an excellent choice. Total code ownership makes it a trusted platform for professional projects.

✅ Strengths

Spec-first methodology: specification before code generation
TypeScript/Next.js/Supabase code production-ready and maintainable
No vendor lock-in: GitHub export or direct code download
Complete full-stack architecture (frontend + backend + DB) in one session
Full access to Agentic Mode from the Starter plan
Dedicated support and early access to new features on higher plans

⚠️ Limits

Variable credit consumption depending on complexity: hard to estimate
Less suited for very specific projects with rare technical constraints
Requires writing a good brief for optimal results
No completely free plan: limited trial before billing

👤 GOOD CHOICE?

Capacity est-il fait pour vous ?

✓ Ideal if you…

✓ Développeurs solo voulant scaffolder rapidement une app
✓ Fondateurs lançant un MVP sans équipe technique
✓ Agences ayant besoin de prototypes clients rapidement
✓ Freelances souhaitant accélérer leur production de code

✗ To avoid if you…

✗ Projets legacy nécessitant des stacks techniques non supportées
✗ Entreprises avec des contraintes de sécurité très strictes sur le code
✗ Développeurs cherchant uniquement un assistant de complétion de code
✗ Utilisateurs non-techniques sans notions de développement web

🎯 Our verdict

Capacity.so stands out in the crowded vibe-coding universe through its disciplined spec-first approach. By enforcing a brief and user stories before any generation, it produces TypeScript/Next.js code significantly more maintainable than most competing tools. Complete code ownership without vendor lock-in is a strong competitive advantage for developers and agencies. Plans are accessible: Starter at $25/month, Growth at $69/month, and Professional at $129/month. The main limitation is sometimes unpredictable credit consumption for complex projects. For developers, founders, and agencies looking to quickly scaffold complete production web applications, Capacity.so represents one of the best efficiency-to-cost ratios on the market.

❓ FREQUENT QUESTIONS

FAQ — Capacity

What is Capacity.so's spec-first method?

Before generating code, Capacity.so asks you to define a complete project brief and precise user stories. This allows the agent to produce code better aligned with your business needs.

Can I export my code from Capacity.so?

Yes, you can export all source code to GitHub or download it directly. There is no vendor lock-in.

What technologies does Capacity.so use?

Capacity.so generates applications in TypeScript with Next.js for the frontend and Supabase for the backend/database, with Tailwind CSS and tRPC/REST APIs.

What are Capacity.so's pricing plans?

Starter at $25/month (100 credits), Growth at $69/month (250 credits), Professional at $129/month (500 credits), and Enterprise at $299/month (1,000 credits).

Is Capacity.so suitable for non-developers?

Capacity.so is primarily designed for developers and founders with technical knowledge. Basic web development knowledge is recommended to fully leverage the tool.

★★★★½ 4.6/5 (68 avis)

Code & Development No-code & Automation

Transform your idea into a production-ready full-stack web app in minutes.

💰 Rate Starting from $25/month

🆓 Free trial Yes

🌐 Languages 🇬🇧 English

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