Massvai

Turn a prompt into an exportable full-stack Next.js app with Supabase and Vercel deploy

Freemiummassvai.comUpdated 25 Oct 2026

About Massvai

Massvai is an AI app builder that generates full-stack Next.js applications from a plain-language prompt. A coding agent plans the work, writes TypeScript and Tailwind code, and shows progress in a live preview, with optional Supabase for authentication and database, Stripe-ready billing UI, GitHub sync and a guided deploy to Vercel. Users can attach a screenshot or reference file to a prompt, review every generated file, and export the full codebase, so the project is not locked inside the platform.

Best for

SaaS MVPs
Internal tools
Client websites that need an exportable Next.js codebase
SaaS MVP: Build authentication, a dashboard and database flows for a first product release.
Internal tools: Turn an operational workflow into a full-stack app without waiting on an engineering queue.
Client websites: Go from a brief to a responsive website, review the code and deploy it.
Prototype to repository: Generate an app, sync it to GitHub and continue development in your own editor.

Not ideal for

Projects on non-Next.js stacks
Teams that need a Windows desktop app today
Users who need native mobile apps

Popular with

Indie founders
Developers
Product teams
Agencies

Screenshots

Key features

Prompt-to-app generation
Live preview
Durable agent workspace
Supabase integration
GitHub sync and Vercel deploy
Code export
Screenshot and file references
Desktop app

Pros and cons

Pros

Generates real, exportable Next.js and TypeScript code rather than a locked sandbox
Built-in path from prompt to GitHub sync and Vercel deployment
Free plan with no credit card required
Clear published refund policy and legal pages
Available on the web and as a macOS app

Cons

Limited to the Next.js, Supabase and Vercel stack
Token-based credit billing makes monthly cost hard to predict
Windows app is not yet available and the macOS download appears to be unsigned
The company behind the product is not named on the site, and the site links to an earlier "Old version" at another domain

Pricing

Plans as listed by the vendor on 25 Oct 2026. Check their site for current prices.

See massvai.com

Free

Explore the workspace and build a first project without a card.

100 welcome credits
Live preview
Code export
Community support

Builder

Pro

$49/month

For founders and teams building every week.

4,000 credits per month
Everything in Builder
Supabase setup assistance
Version history and restore
Priority product support

Our ratings

Scored out of 10 by the Finder Atlas editorial team.

7.4overall

Code Quality & Ownership: 7.8
Ease of Use: 8.0
Deployment Workflow: 7.8
Stack Flexibility: 6.5
Pricing Clarity: 6.8

Platforms and integrations

Available on

Web
macOS

Works with

GitHub
Vercel
Supabase
Stripe

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Release history

Oct 25, 2026
The site offers macOS downloads for Apple silicon and Intel; version 1.0.30 was current on this date and Windows is l...
The site offers macOS downloads for Apple silicon and Intel; version 1.0.30 was current on this date and Windows is listed as coming soon.

Reviews

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Frequently asked questions

Do I own the code Massvai generates?

According to Massvai, yes. You can inspect and export every file, sync the repository to GitHub and use the Next.js code in your own workflow. The terms add that you are responsible for reviewing, testing and securing generated applications.

Is there a free plan?

Yes. The Free plan costs $0, needs no credit card and includes 100 welcome credits, live preview and code export. Paid plans are Builder at $25 per month and Pro at $49 per month.

How do credits work?

Credits are charged by actual model token usage, with rates configured per model. Subscriptions add credits each billing period, and the billing page shows usage and balance.

What stack does Massvai generate?

Next.js 15 with TypeScript and Tailwind CSS, with optional Supabase for authentication and database and Stripe for billing, and GitHub plus Vercel for source control and hosting.

Is there a desktop app?

There is a downloadable macOS app for Apple silicon and Intel Macs. The Windows version is marked as coming soon. The macOS download file name indicates an unsigned build.

What is the refund policy?

A first subscription charge can be refunded within 14 days if no more than 10% of that period's credits were used. Unintended renewals can usually be refunded if reported within 72 hours and no new-period credits were used.

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