Build a SaaS with AI

Build a SaaS with AI—auth, billing, and data included

From idea to charging customers—without rebuilding when you find PMF.

Integration prompts for Stripe, auth, and email built in.

Card required — $0 for 7 days.

Why teams choose 99xDev

Full-stack output, built-in data tools, and code you can export when the project outgrows the studio.

Add Stripe checkout and subscriptions from the Prompts library—faster than wiring billing from scratch.

Describe roles and protected routes; use auth prompts when you need sign-in for your SaaS.

Ship v1 on built-in SQLite; export and point at Postgres when you scale.

Put your SaaS on your hostname when you are ready to sell—not a permanent builder subdomain.

Test pricing pages and checkout in Preview before you connect production Stripe keys.

Export when you hire engineers—they work in familiar React + Express, not a proprietary runtime.

Is this production-ready for paying users?: Many teams validate on 99xDev, then export or harden on their stack. You own the code and can add tests, monitoring, and compliance like any greenfield SaaS.

Create your account and start building. Card required — $0 for 7 days.