AI SaaS Builder for Your MVP
Mythex is an AI SaaS builder for getting a first version in front of users: describe the product and it builds an MVP with a marketing page, the core feature and a real database, published to a URL you can share. You change it by chatting, so a pivot costs a message rather than a sprint.
Who it's for
Non-technical founders validating a SaaS idea, solo builders who want an AI MVP builder instead of a months-long build, and product people who need a working prototype to test with customers rather than a clickable mock-up.
What you can build
- A landing page plus the product behind it, in one project
- One core workflow with saved data per user
- A waitlist that turns into the first beta
- A prototype you can put in front of five customers this week
- A demo for investors that runs on real data
How to build an MVP with AI
An MVP is one core feature done end to end, plus enough of a wrapper to explain it. Write the product in one sentence first; if you can't, use Mythex's Plan mode to talk it through before any code is written. Then build the core loop (create, list, edit) and check it in the preview before you add settings, teams or billing screens. Publish once that loop works, send the link to the people you built it for, and change it by chatting based on what they do.
- One sentence: who it is for and what it does
- Build the core loop before anything else
- Attach a database when users' data must persist
- Publish early and watch real use
Prototype or MVP: what you get
Many AI prototype tools stop at screens. A Mythex project is real code with a database behind it, so the same thing you show as a prototype can take real sign-ups and keep real data. That makes it a fair test of demand: people either come back to it or they don't. If they do, you keep building on the same project instead of starting over in a second tool.
Sign-in and payments for a SaaS
Customer accounts and charging cards both use providers you choose. For sign-in, ask Mythex to add sign-up and login with the approach you prefer, such as email and password stored in your database. For payments, create a Stripe account, put your own keys in the project's secrets and ask for Stripe Checkout; test it in the preview with Stripe's test cards, then publish. Add both only when someone would actually pay, so the first version stays small.
- Sign-up and login with your chosen approach
- Stripe Checkout with your own keys
- Secrets kept in project settings, not in code
When to bring in a developer
If the idea works and the product grows, a developer can continue from what you built. On Pro you can export the code or sync it to GitHub, and the project uses standard files rather than a locked canvas. Plenty of founders keep building in Mythex well past the MVP, adding features by chatting as customers ask for them; the point is that the choice of when, and whether, to hand over stays yours.
A prompt to start from
Build a SaaS MVP for freelance designers to send project proposals. Include a marketing landing page with pricing, sign-up and login, and a dashboard where each user creates proposals with a client name, scope, price and status (draft, sent, accepted). Each user sees only their own proposals, stored in a database.
Questions
Can I build a SaaS with AI without a developer?
Yes, for the first version. Mythex builds the landing page, the product and the database from your description, and you refine it by chatting. Bring in a developer later if the product needs it; on Pro they can start from your exported code.
Can my SaaS charge customers?
Yes, through Stripe with your own account and keys, stored as project secrets. Ask for Stripe Checkout, test it in the preview with Stripe test cards, then publish. Mythex does not run billing for your customers itself.
Is there a free MVP builder plan?
The Free plan has no credit card, 5 credits a day and unlimited projects, and you can publish what you build. Pro at $25/month adds 100 credits a month, a custom domain, code editing, export and GitHub.
Can the MVP become a phone app later?
Yes, on Pro. Mythex can turn the published app into an Android app for Google Play and an iPhone app sent to TestFlight, and both update when you publish the web app.
Do I need to know how to code?
No. You describe what you want in plain language and Mythex writes the code, shows a live preview, and lets you change things by chatting. The code editor and terminal are there if you ever want them.
Do I have to explain my business every time?
No. Mythex remembers who you are and how you work across every project, and follows the standing notes you set for a project, so you are not re-briefing it in each new chat. You can read, edit or switch all of it off.
How much does it cost?
There is a Free plan with daily credits, enough to build and publish a first version. Pro is $25/month and adds full code editing, GitHub export, custom domains, and credit top-ups.
Templates to start from
- Waitlist Landing Page Template — Countdown, live counter, lead admin
- SaaS Landing Page Template — Hero, features, pricing, FAQ, testimonials
- Event Registration Page Template — Tiers, waitlists, attendee dashboard
- Course Landing Page Template — Curriculum accordion with pricing
- Cloud Storage SaaS Template — Marketing site, billing UI, and 2FA
- Product Launch Page Template — Device mockups with email capture
- Pre-Launch Lookbook Template — Email capture with collection grid
- Subscription News Site Template — Paywall-ready editorial grid
Guide
More ways to build with AI
- AI Web App Builder
- Prompt to App: Create an App With an AI Prompt
- AI Dashboard Generator
- AI Client Portal Builder
- AI App Maker: Describe Your App, Get One That Works
- AI Website Maker: From One Prompt to a Live Site
- AI Booking App Builder
- AI Restaurant Website Builder
- AI Portfolio Website Builder
- AI Online Store Builder
- AI Landing Page Builder