SaaS guide
Build a SaaS app with AI
Auth, payments, dashboards, multi-user data - the boring parts of every SaaS - generated and wired up for you. Standard Next.js + Tailwind under the hood, visible in the code editor. Visual editor for the parts that need polish.
01 / What you can build
Real projects, not toy examples.
People are shipping these saas apps on Webtwizz this quarter. Each one is a complete app: real auth, real data, real money flowing through Stripe.
B2B SaaS dashboards
Sign up, log in, manage a team, view your data, get billed monthly. The classic SaaS shape.
Indie / solo SaaS
Single-user tools that solve a specific problem and charge $9-49/mo. Webtwizz scaffolds the whole thing.
AI-wrapped SaaS
UIs around an OpenAI or Claude API call, with sign-up, credits, and Stripe billing.
Vertical SaaS
Industry-specific tools - fitness studios, dental practices, real estate. CRM-shaped apps with custom workflows.
02 / The build
From a sentence to a deployed app.
5 ordered steps. No config files, no devops, no SQL migrations to write by hand.
STEP 01
Describe the SaaS you want to build
Open Webtwizz and write a prompt like "A SaaS that helps freelancers send invoices and track payments, with email login and a $19/mo paid plan." Webtwizz scaffolds a Next.js project with auth, Stripe, and a dashboard.
STEP 02
Connect Supabase for users and data
From the integrations panel, click Supabase. Sign in, pick a project, and Webtwizz wires up auth and database access. Your generated tables (users, invoices, payments) appear automatically.
STEP 03
Connect Stripe for billing
One-click Stripe connection. Webtwizz creates the checkout flow, webhook handler, and subscription state management. You set the price tiers from the dashboard.
STEP 04
Refine the UI visually
Click any element to edit text, spacing, colors, or copy directly. The visual editor updates the source code under the hood - no need to prompt the AI for every tweak. Use AI for bigger structural changes.
STEP 05
Add a custom domain and ship
On the Standard plan, point your domain at Webtwizz, hit publish, and your SaaS is live with SSL. Iterate on the live site by editing visually or with AI.
03 / Why it works
The parts other AI builders skip.
Anyone can scaffold a CRUD app. The reason these projects ship is the integration plumbing other builders leave for you.
Auth + multi-user from day one
Supabase auth wired up with email/password and Google OAuth. User-scoped data queries handled automatically - no RLS landmines.
Stripe subscriptions, not just one-time payments
Webtwizz scaffolds full subscription billing with webhooks, customer portal, and tier-gated features. Skip the 3-day Stripe boilerplate.
Real Next.js code, not a black box
Standard Next.js + Tailwind under the hood. The code editor is right there, so you can read, audit, and change anything the AI generated.
Edit code when AI gets it wrong
On Standard+, drop into the code editor. Make a manual change, then ask AI to extend it - the visual editor still works on your hand-written code thanks to the source-truth bridge.
04 / The stack
Wired up. One click each.
Supabase, Stripe, the email layer, the analytics layer. OAuth, env vars, webhooks, scaffolded routes, all generated correctly the first time.
Supabase
Auth + database. Handles user accounts, sessions, and your app data.
Stripe
Subscription billing, customer portal, webhooks. One-click connect.
Resend
Transactional email - welcome, password reset, payment receipts.
PostHog
Product analytics - funnel tracking, retention, feature usage.
Sentry
Error monitoring once you have real users. Catches issues before they email you.
05 / Questions
The honest answers.
The questions founders actually ask before they commit to a stack.
How long does it take to build a SaaS with Webtwizz?
Most founders ship a working v1 in a weekend. Auth, Stripe, dashboard, and a custom domain in a few hours. Polishing the design and edge cases is the next week or two - exactly the parts where Webtwizz's visual editor saves the most time.
Is this real Next.js code under the hood?
Yes. Webtwizz generates standard Next.js + Tailwind. You can read it in the built-in code editor, change anything by hand, and the visual editor still works thanks to the source-truth bridge.
Can I add custom backend logic?
Yes. Webtwizz uses Next.js API routes for backend logic, and you can edit them in the code editor. For more complex logic, Supabase Edge Functions are accessible through the Supabase integration.
Will Stripe really work end to end?
Yes. Webtwizz scaffolds checkout, webhooks, customer portal, and subscription state. The hardest part of any SaaS - Stripe webhook handling and subscription lifecycle - is generated correctly out of the box.
Will my SaaS scale on Webtwizz?
Yes. Each published project runs on its own dedicated machine with auto-scaling, and the underlying stack is the same Next.js + Supabase + Stripe setup serious SaaS teams already use. Webtwizz handles hosting, custom domain, SSL, and zero-downtime publishes for you.
Build it visually. Ship it today.
Webtwizz is the AI app builder that lets you edit AI-generated code visually, and ship full-stack apps with auth, databases, and payments.
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