Capacity
AI builder for full-stack web and mobile apps, hosted for you
What is Capacity?
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.
Capacity is a paid product with a free trial, starting at $25 per month (Starter). See every plan
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.
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.
Capacity pricing
- Starts at
- $25 per month (Starter)
- 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 | $25per month | 100 credits for the Capacity agent, unlimited building from Claude and ChatGPT, unlimited projects, custom domains and email support. |
| Growth | $69per month | 250 credits for the Capacity agent, full codebase export and a dedicated WhatsApp support channel. |
| Professional | $129per month | 500 credits, everything in Growth, premium support and early access to new features. |
| Business | $299per month | 1,000 credits, everything in Professional, a dedicated success manager and custom integrations. |
Read from capacity.so on Oct 5, 2026. Prices change, so confirm with Capacity before you buy.
Works with
Capacity alternatives
- Capacity vs Lovable
Free plan · from $21/mo
- Capacity vs Bolt
Free plan · from $18/mo
- Capacity vs Base44
Free plan · from $16/mo
- Capacity vs Replit
Free plan · from $18/mo
- Capacity vs Emergent
Free plan · from $17/mo
Common questions
Is Capacity free?
No, Capacity is a paid product, but you can try it first. The homepage says your first app is free; the pricing page lists paid plans only, with no free credit amount.
How much does Capacity cost?
Capacity lists 4 plans. Starter: $25 per month. Growth: $69 per month. Professional: $129 per month. Business: $299 per month. Prices were read from capacity.so on Oct 5, 2026.
What platforms does Capacity work on?
Capacity is available on Web and macOS.
Does Capacity have an Android app?
No Android app was listed when its pages were read on Oct 5, 2026. Capacity is listed for Web and macOS.
Does Capacity have an iPhone app?
No iPhone app was listed when its pages were read on Oct 5, 2026. Capacity is listed for Web and macOS.
Is Capacity open source?
Capacity is not described as open source on its own site, as read on Oct 5, 2026.
What does Capacity integrate with?
Capacity's listing names Claude, ChatGPT, Supabase, Stripe, Vercel, GitHub and Expo. A listing names up to eight integrations, so it may connect to more.
Who makes Capacity?
Capacity is made by RocketSocial SASU. It dates from 2024.
What are the alternatives to Capacity?
The closest alternatives to Capacity in our directory are Lovable, Bolt, Base44, Replit and Emergent. Each one has a side-by-side comparison with Capacity.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Oct 5, 2026.