MVP Development Checklist for Founders (2026)

Most MVPs fail not because the idea was bad, but because the execution was incomplete. A missing auth flow, no error handling, a broken payment link — small gaps that kill user trust fast. This checklist covers every phase of MVP development so you can ship confidently.

Phase 1: Scoping (Before You Write Code)

1. Define the one core problem your MVP solves
2. Write down exactly who your first 10 users are
3. List the 3–5 user flows that are non-negotiable for launch
4. Identify features that can wait until v2
5. Set a hard launch deadline (2–4 weeks is realistic for a lean MVP)
6. Decide on your monetization strategy upfront (freemium, paid, waitlist)

Phase 2: Tech Stack Selection

The wrong tech stack can double your build time. For most SaaS MVPs in 2026, this combination is the fastest path to launch:

Layer	Recommended Tool	Why
Frontend	React + TypeScript	Widely supported, fast to build, great ecosystem
Styling	Tailwind CSS	No CSS files, rapid prototyping
Backend/DB	Supabase	Postgres + auth + storage in one
Payments	Stripe	Best docs, most reliable, handles tax/compliance
Deployment	Vercel	Zero-config CI/CD, free tier, instant previews

• Avoid over-engineering: no microservices, no Kubernetes for an MVP
• Pick tools you or your developer already know
• Prefer managed services over self-hosted (saves ops time)

Phase 3: Authentication Checklist

1. Email + password signup/login
2. Google OAuth (most users prefer this)
3. Password reset flow via email
4. Email verification (prevents spam signups)
5. Protected routes (unauthenticated users can't access the app)
6. Session persistence (user stays logged in on refresh)
7. Logout clears session properly

Phase 4: Core Features Checklist

For each core user flow, verify these items are complete:

• Happy path works end-to-end
• Error states are handled (not just empty screens)
• Loading states are visible (spinners, skeletons)
• Mobile responsive (test on iPhone + Android)
• No broken links or 404 pages
• Data persists after page refresh
• Input validation prevents bad data from reaching the database

Phase 5: Payments Checklist (If Applicable)

1. Stripe test mode works for all payment flows
2. Successful payment triggers correct feature unlock
3. Failed payments show a clear error message
4. Subscription cancellation is handled gracefully
5. Webhooks are set up and tested (subscription.updated, payment_failed)
6. Customer portal link works (Stripe-hosted billing management)
7. Switch to Stripe live keys before go-live

Phase 6: Pre-Launch Checklist

• Custom domain configured with SSL (not the *.vercel.app default)
• Favicon and OG image set (for social sharing)
• Privacy Policy and Terms of Service pages exist
• Contact/support email is working
• Analytics installed (Vercel Analytics, Plausible, or GA4)
• Error monitoring set up (Sentry free tier is fine)
• Environment variables moved from .env to production secrets
• No console.log statements with sensitive data
• Database row-level security (RLS) policies enabled on Supabase

Phase 7: Launch Checklist

1. Deploy to production and test all flows on the live URL
2. Submit sitemap to Google Search Console
3. Post to your first distribution channel (Twitter, LinkedIn, IndieHackers)
4. Send access to your first 5 test users
5. Set up a feedback collection method (Typeform, Notion form, or just email)
6. Monitor error logs for the first 48 hours