Glossary
How Much Does Web App Development Cost?
A production web app costs €10,000–€80,000 depending on feature scope, authentication requirements, and whether it includes real-time or multi-tenant functionality.
By scope:
| Scope | Cost | Timeline |
|---|---|---|
| Simple tool or landing page | €3k–€8k | 1–3 weeks |
| Focused web app (1 core feature) | €10k–€25k | 4–8 weeks |
| SaaS MVP (auth + billing + core) | €15k–€40k | 6–12 weeks |
| Multi-tenant platform | €30k–€80k | 10–16 weeks |
By team structure:
| Team | Cost | Trade-off |
|---|---|---|
| Senior solo developer | €10k–€40k | Bandwidth limit on large scope |
| Boutique agency | €30k–€100k | PM overhead, slower iterations |
| First in-house hire | €80k–€150k/year | 4–6 months before first commit |
What every web app needs:
- Frontend (React, Next.js, or Webflow for simpler sites)
- Authentication (Supabase Auth or NextAuth)
- Database and API (Supabase Postgres + Edge Functions, or custom backend)
- Deployment (Vercel, Netlify)
What adds cost:
- Stripe payment integration: +1–2 weeks
- Real-time features (WebSockets): +1–2 weeks
- Mobile app alongside web: +4–8 weeks
- Multi-language (i18n): +1 week
- Admin dashboard: +1–2 weeks