Capacity

What Capacity does

Capacity is an AI-powered application generation platform that enables non-technical founders, entrepreneurs, and developers to build full-stack web and mobile applications from natural language descriptions. Founded in late 2024 in France by Samuel Rondot and Baptiste Studer, the company operates as RocketSocial SASU, headquartered in Ecully. The platform generates production-ready code using React, Next.js, TypeScript, and Tailwind CSS for the frontend, with an Express server and SQLite database for the backend, and extends to React Native / Expo for mobile iOS and Android applications. Native integrations with Supabase (PostgreSQL, authentication, real-time, edge functions) and GitHub (version control, branching, CI/CD) are core architectural dependencies, and the platform supports multiple underlying AI models including Claude, GPT-4, and Gemini.

The core product methodology is a spec-first ("Spec Coding") approach in which users define four layers of documentation — a project brief, UX specifications, design system, and user stories — before code generation, with an alternative "Vibe Mode" for rapid prototyping. A persistent AI Co-founder offers 24/7 strategic guidance, maintains session context, and provides self-fixing code capabilities. The product surface has been expanded with specialized tools for mobile apps, MVPs, wedding websites, landing pages, and React boilerplates.

Capacity operates on a self-serve, product-led growth model distributed through capacity.so, with a freemium tier and a credit-based pricing model in which credits never expire and failed generations do not consume credits. Community and acquisition channels include an active Discord, an affiliate program, Product Hunt visibility (including #1 Product of the Day for Spec Coding), and a content/SEO program targeting comparison keywords against peers such as Bolt.new, Lovable, v0.dev, and Cursor. The company is bootstrapped with no disclosed external funding, no disclosed revenue, and no enterprise sales motion.

Name

Capacity

Legal name

RocketSocial SASU

Website

https://capacity.so

Company type

Private

Founded year

2024

Operating status

Operating

Short description

Capacity is an AI-powered platform that lets non-technical founders and developers build full-stack web and mobile applications from natural language descriptions, using a spec-first methodology and a self-serve, credit-based freemium model.

Ownership category

akta.pro rank

Product category

AI App Builder

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (51821)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Model Hosting, Serving & Inference Platforms (HDAAACAB)

Keywords

• AI app builder
• Vibe coding
• No-code platform
• Full-stack generation
• AI mobile apps

Headquarters

HQ city

Lyon

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Software

Cost components

Technology or R&D, Personnel, Marketing or Sales, Infrastructure, Operations

Revenue model

1. Credit-based subscription: Users purchase credits to use the platform. Credits are used for AI generations and never expire. Free tier available for initial usage.
2. Credit-based usage: Pay-for-what-you-use model where credits are consumed based on generation complexity. Failed attempts do not consume credits.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Capacity is an AI-powered platform that generates full-stack web and mobile applications from natural language descriptions. It combines an AI Co-founder assistant with a spec-first (Spec Coding) or rapid (Vibe Mode) development approach, producing production-ready React, Next.js, TypeScript, Tailwind CSS frontends backed by an Express server with SQLite database, and React Native mobile apps, which users fully own and can export to GitHub.

Product overview

Capacity is an AI-powered app builder platform offering multiple specialized tools for different use cases. The core Capacity Platform uses an AI Co-founder and spec-first (Spec Coding) or rapid (Vibe Mode) approaches to generate full-stack web and mobile applications. Specialized offerings include the AI Mobile App Builder for React Native iOS/Android apps, AI MVP Builder for startup validation, AI Wedding Website Builder with RSVP and gallery features, AI Landing Page Builder, React Boilerplate Generator, and Custom Web Application Development. All products generate production-ready code using React, TypeScript, Next.js, Tailwind CSS, Supabase, and GitHub integration that users fully own.

Differentiator

Problem solved

Functional benefit

Products and services

• Capacity Platform AI-powered platform that generates full-stack web and mobile applications from natural language descriptions. Features an AI Co-founder for strategic guidance and uses spec-first development methodology to produce production-ready code that users own completely.
• AI Co-founder AI-powered strategic partner feature that works alongside users 24/7, providing instant help, suggestions, and code generation. Helps refine product vision, create project briefs, define specifications, and make architectural decisions.
• Spec Coding

Quantifiable outcome

• Build MVPs in minutes instead of months
• +3 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration5 records

AI capability7 records

Feature6 records

Partnerships

Six partnerships are on record, tiered core.

• SupabasecoreTechnology or IntegrationNative integration with Supabase providing PostgreSQL database, authentication, real-time subscriptions, and edge functions. Deep integration where Supabase is built into the platform architecture.
• GitHubcoreTechnology or IntegrationNative GitHub integration for version control, branching, collaboration, and CI/CD workflows. Users can connect repositories and export code directly.
• Claude (Anthropic)coreTechnology or IntegrationAI model powering code generation. Users can switch between Claude, GPT-4, Gemini, and other models.
• OpenAI (GPT-4)coreTechnology or IntegrationAI model option for code generation. Users can select from multiple AI models including GPT-4.
• Google (Gemini)coreTechnology or IntegrationAI model option for code generation. Multiple AI model support allows users to choose the best model for their needs.
• React Native / ExpocoreTechnology or IntegrationTechnology stack for mobile app generation. Generates React Native code that can be built for iOS and Android.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Lovable: AI app builder (formerly GPT Engineer) that lets non-technical users generate production web apps from prompts, directly overlapping with Capacity's MVP and web app builders.
• Bolt.new: StackBlitz's AI-powered web app generator that turns natural language into full-stack apps in the browser — the closest direct competitor to Capacity's core builder.
• Cursor: AI-native code editor built on top of Anthropic/OpenAI models — competes for the same generative-coding attention and developer mindshare as Capacity's Spec Mode.
• v0.dev: Vercel's AI UI/code generator producing React + Tailwind components from prompts; positioned as a generator of front-end artifacts directly comparable to Capacity's Spec/Vibe output.
• Windsurf: Codeium's agentic AI IDE that builds and edits entire codebases from natural language — competes for vibe-coding and AI assistance workflows similar to Capacity.

Emerging players

• Tempo Labs: AI app builder producing React applications with UI components and backend logic from prompts — directly comparable to Capacity's React/Next.js full-stack workflow.
• Cody (Sourcegraph): Sourcegraph's AI coding assistant that generates and edits code across large codebases — comparable in the AI-assisted development niche.
• Create.xyz: Emerging prompt-to-web-app builder overlapping with Capacity's AI Landing Page and MVP builders, focused on non-technical creators.
• Cline: Open-source AI coding agent for VS Code that plans, edits and executes multi-file code changes — comparable as an autonomous-coding alternative to Capacity's AI Co-founder.

Broad incumbents

• Replit: Established browser-based IDE with an AI agent for full-stack app generation; a broader, more general-purpose incumbent spanning hosting, collaboration and AI coding.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/capacityso
• Facebookfacebook.com/profile.php

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Capacity