Next.js SaaS boilerplate vs starter kit

Both products are Next.js 15 App Router apps with a user, a password hash, a plan column, and Stripe customer and subscription ids. They are not the same size.

Boilerplate

The Next.js SaaS Boilerplate is the smaller base. Prisma uses SQLite. You get accounts, a dashboard, and billing hooks. Use it when you want the shape and will replace the database and the mail path yourself. The layout is described in Next.js SaaS boilerplate architecture.

Complete kit

The Complete SaaS Starter Kit uses PostgreSQL. The webhook updates plan from checkout.session.completed, customer.subscription.updated, and customer.subscription.deleted, and it sends a short email when Checkout completes. That path is the one in building a SaaS with Next.js, Stripe, and PostgreSQL.

What neither one is

Neither kit is multi-tenant. Neither includes an AI chat or a marketplace. Those are separate products. If you only need Checkout, the portal, and webhooks, the Stripe Subscription Starter is the narrower package. Its schema matches the user columns above, on SQLite.