burakorkmez/full-stripe-tutorial ? reverse-engineered prompt

Build me a simple Stripe based SaaS app that’s easy for beginners to understand and use.

I want a clean web app where users can sign up, log in, and then choose between a one time payment or a subscription plan with monthly and yearly options. After paying, they should be able to access the app, manage their account, and open a customer billing portal to update payment details or cancel their subscription.

Please wire up the full flow, including authentication, Stripe checkout, webhooks, and email notifications for important events like successful payments or subscription changes. It should feel polished, work well on mobile, and be ready for deployment.

If you need to check anything current in the docs, look it up online first. Also make sure the app is set up with clear environment variables and sensible defaults so it’s easy to run locally and deploy later.