Plan Limits and Usage Quotas

Now that we've covered Stripe Checkout for Subscriptions, our Django app can tell the difference between a free user and a paid subscriber.

That billing state becomes useful only when it changes product behavior.

For our website checker, a simple SaaS-style limit might be:

Free plan
  3 audits per month
  10 custom dictionary terms

Pro plan
  100 audits per month
  500 custom dictionary terms

This lesson adds the missing layer between billing and features: plan limits and usage quotas.

By the end, your app will have a clear answer to one important question:

Should this user be allowed to start another audit right now?

In the next lesson, we'll harden the full launch flow end-to-end. Here, stay focused on quota rules, usage tracking, and user-facing limit states.