Website vs Web App: When You Need SaaS, Not a Landing Page
Accounts, roles, billing, API — that's a product, not a brochure site. Signs, architecture, and budgets from $2,499.
'We need a site with user accounts, roles, and payments' — that's a web app. Confusing the two costs months of rework and $3,000–$8,000 extra.
Signs you need a web app
- Users register and return to the system
- Multiple roles: admin, manager, client, partner
- Data changes in real time (statuses, orders, tasks)
- Subscriptions, billing, or tiered plans
- CRM/ERP integrations via API, not email forms
How architecture differs
A website is mostly content and forms. A web app is state, auth, database, business logic, and observability. A stack like Next.js + PostgreSQL + auth scales; WordPress with 15 plugins usually doesn't.
Modules to plan upfront
- Auth and RBAC
- Admin panel for operations
- API layer for integrations
- Logging and alerts
- Roadmap for phase two — not 'we'll fix it later'
Timeline and budget
SaaS MVP — 3–8 weeks, from $2,499. Discovery (architecture, roles, flows) — 1–3 days before code. Full product with billing and integrations — 2–3 months.
Don't mix brochure site and product in one brief. Ship MVP with 2–3 critical flows first — then add modules.
Common mistakes
- Building 'accounts' on a page builder with no API
- Skipping role design before development
- Ignoring first-session onboarding
- No post-launch support plan
"SaaS isn't a website with a Login button. It's a product with data, permissions, and operations."