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Capacity

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AI app builder that turns plain-English prompts into production-ready full-stack web and mobile apps you fully own.

What it does

Capacity is an AI platform that builds full-stack web and mobile applications from natural-language descriptions. An AI 'Co-founder' works alongside the user, and a Spec mode plans the project before coding. Each full-stack app ships with its own Express backend and SQLite database, generated in React/TypeScript/Tailwind (React Native for mobile), with full code ownership and export.

How to use: Users describe their project idea in natural language, and Capacity's AI translates it into real code, UI, and logic, handling the entire process from design to deployment.

Core features

Natural-language app generation
AI Co-founder assistant
Spec mode for planning before building
Dedicated Express backend and SQLite database
React/TypeScript/Tailwind and React Native output
One-click publish and full code export

Best for

→Build a full-stack web app without coding
→Prototype and ship a mobile app
→Plan an MVP with an AI co-founder
→Export owned code to GitHub

Pricing

Starter
$25/mo
Growth
$69/mo
Professional
$129/mo
Business
$299/mo
Toolspool rankingby monthly traffic

Reviews

Big-picture takes: what it's for and whether it delivers. High-engagement YouTube videos — not sponsored.

Heat Capacity, Specific Heat, and Calorimetry
Professor Dave Explains · 1.2M views
Power Bank Capacity is Confusing. Let me Explain
LeftyMaker · 650K views

Tutorials

Step-by-step: exactly how to get things done with it.

Capacity For Kids - Math | Tutway
TutWay · 589K views
Convert Customary Units of Capacity | fl oz, c, pt, qt, and g
Math with Mr. J · 409K views
Maths - What is Capacity? (Primary School Maths Lesson)
Kev Maher · 219K views