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The Minimum Viable SaaS: Ship in a Weekend With Next.js 16

#startup #tutorial #saas #nextjs

You do not need 3 months to launch a SaaS. Here is the minimum viable feature set and how to ship it in a weekend.

The minimum feature set

Every SaaS needs exactly 5 things on day one:

  1. Authentication — users need accounts
  2. Billing — you need to get paid
  3. A core feature — the thing people are paying for
  4. A landing page — to explain what it does
  5. Email — for onboarding and billing notifications

That is it. No admin panel. No team management. No analytics. No blog. Those are week 2+ features.

The weekend schedule

Saturday morning: Foundation

Start with a starter kit. Do not build auth and billing from scratch — you will burn the entire weekend on plumbing.

# If using LaunchKit:
unzip launchkit-v1.0.zip && cd launchkit
npm install && cp .env.example .env.local
npx prisma db push && npm run dev
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Auth, billing, email, landing page: done in 10 minutes.

Saturday afternoon: Core feature

This is the only code you should write from scratch. Everything else should be pre-built.

Add your feature as a new page:

src/app/(app)/your-feature/page.tsx
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If it needs API endpoints:

src/app/api/your-feature/route.ts
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If it needs database models, add to prisma/schema.prisma and run npx prisma db push.

Sunday morning: Polish

  • Update the landing page copy to describe YOUR product
  • Update pricing tiers to match your offering
  • Test the full flow: sign up → subscribe → use feature → cancel

Sunday afternoon: Deploy 

git push origin main
# Import in Vercel
# Add environment variables
# Done
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What you skip (on purpose)

  • Admin panel — use Prisma Studio or direct DB queries
  • Team management — add when someone asks for it
  • Analytics — use Vercel Analytics (free) or Plausible
  • Blog — your Dev.to articles are your blog for now
  • Custom domain — use the .vercel.app domain until you have paying users

The math

Using a starter kit: ~10 hours of work
Building from scratch: ~80 hours of work

The difference is not quality — it is speed. Ship fast, validate, iterate.

The starter kit I use

LaunchKit ($49) — handles items 1, 2, 4, and 5 from the list above. You only build item 3.

Preview | Get LaunchKit ($49)

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