# Capacity

> AI builder for full-stack web and mobile apps, hosted for you

Capacity builds full-stack web apps and native mobile apps from a plain-language description, asking a few clarifying questions before it generates the frontend, backend and database. Apps are hosted on Capacity's own servers and can use a custom domain. Paid plans include credits for the built-in agent and also allow unlimited building from Claude or ChatGPT through a connector, which runs on the buyer's own AI subscription.

- **Category:** AI App Builders
- **Made by:** RocketSocial SASU (since 2024)
- **Website:** https://capacity.so
- **Runs on:** Web, macOS
- **Facts last checked:** Oct 5, 2026

## Pricing

Capacity is a paid product with a free trial, starting at $25 per month (Starter).

- **Pricing model:** Free trial
- **Free plan:** None.
- **Free trial:** The homepage says your first app is free; the pricing page lists paid plans only, with no free credit amount.

| Plan | Price | What you get |
| --- | --- | --- |
| Starter | $25 per month | 100 credits for the Capacity agent, unlimited building from Claude and ChatGPT, unlimited projects, custom domains and email support. |
| Growth | $69 per month | 250 credits for the Capacity agent, full codebase export and a dedicated WhatsApp support channel. |
| Professional | $129 per month | 500 credits, everything in Growth, premium support and early access to new features. |
| Business | $299 per month | 1,000 credits, everything in Professional, a dedicated success manager and custom integrations. |

Read from https://capacity.so/pricing on Oct 5, 2026. Prices change, so confirm with Capacity before buying.

## Key features

- **Questions first, then a full-stack app:** Capacity asks about purpose, users and style before it builds, then generates a frontend, a backend and a dedicated database that are wired together.
- **Build from Claude or ChatGPT:** A connector lets Claude or ChatGPT create and edit Capacity apps from a chat. That work runs on your own AI subscription and uses no Capacity credits on paid plans.
- **Vibe and Spec coding modes:** Vibe mode builds straight from prompts. Spec mode has the AI follow a project brief, UX specs and design requirements that are written first.
- **Hosting and custom domains:** Apps publish to a capacity.studio address on a dedicated server. The 256 MB tier uses no credits, larger servers use 1 to 10 credits a day, and custom domains can be connected.
- **Native mobile apps:** A project can include an iOS and Android app built with Expo that shares the web app's backend. Builds run in the cloud and can be submitted to both app stores.
- **Version history and code export:** Every change is a version that can be restored. The pricing page lists full codebase export under Growth, while the changelog says ZIP download is on all plans.

## Good for

- Non-developers who want an app built and hosted in one place
- People who already pay for Claude or ChatGPT and want to build with it
- Products that need a web app and a companion mobile app on one backend

## Worth knowing

- The pricing page lists no free plan; paid plans start at $25 a month, and extra credits are sold from $9 for 10.
- The built-in agent is metered in credits, and each message uses a variable amount depending on the task.
- Servers larger than the free 256 MB tier draw 1 to 10 credits a day from the same balance.
- The desktop app is described as a Mac app; no Windows or Linux version is mentioned.

## Works with

Claude, ChatGPT, Supabase, Stripe, Vercel, GitHub, Expo

**Tags:** App builder, No-code, AI agents, AI features

## Alternatives

- [Lovable](https://toolgpa.com/tools/lovable): Chat-based AI builder for full-stack web apps and websites. [Compare](https://toolgpa.com/compare/capacity-vs-lovable)
- [Bolt](https://toolgpa.com/tools/bolt): Browser-based AI builder for websites, web apps and mobile apps. [Compare](https://toolgpa.com/compare/bolt-vs-capacity)
- [Base44](https://toolgpa.com/tools/base44): No-code AI builder with a database, login and hosting included. [Compare](https://toolgpa.com/compare/base44-vs-capacity)
- [Replit](https://toolgpa.com/tools/replit): Cloud platform where an AI agent builds, hosts and publishes apps. [Compare](https://toolgpa.com/compare/capacity-vs-replit)
- [Emergent](https://toolgpa.com/tools/emergent): AI agents that build and deploy full-stack web and mobile apps. [Compare](https://toolgpa.com/compare/capacity-vs-emergent)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 5, 2026:

- https://capacity.so/pricing
- https://capacity.so
- https://capacity.so/claude
- https://capacity.so/about-us
- https://capacity.so/terms
- https://docs.capacity.so/en/getting-started/introduction
- https://docs.capacity.so/en/features/quickstart
- https://docs.capacity.so/en/features/hosting
- https://docs.capacity.so/en/features/mobile-apps
- https://docs.capacity.so/en/features/changelog

Page: https://toolgpa.com/tools/capacity
Listed by ToolGPA (toolgpa.com).