Web App (Complex)
Web App
from€4,900
Standard web app + payment, external APIs, multilingual, roles — up to 15 main views, ~25 endpoints, RBAC.
Package contents
- Everything from "Web-App (Standard)"
- Roles + permissions (RBAC) — e.g. admin / manager / staff / customer
- Up to 15 main views and ~25 CRUD API endpoints
- Stripe or PayPal payment integrated (subscriptions or one-off)
- 1-2 external API integrations (e.g. CRM, ERP, email provider, shipping)
- File uploads with storage (S3-compatible or local)
- Full-text search (Postgres FTS or Meilisearch)
- Multilingual (DE + EN), all UI text and content bilingual
- Email sending (transactional + marketing-grade) via Mailgun/Sendgrid
- Realtime updates via WebSockets or SSE (e.g. chat, live counter)
- Audit log: who changed what when
- Data export (CSV / Excel / PDF)
- E2E tests for critical flows (login, payment, main action)
- 60 days bugfixes post-launch
What's not included
- Native mobile app (see Flutter 5900 EUR or PWA 2490 EUR)
- ML/AI features (recommendations, classification) — separate from 1900 EUR
- Stripe/provider fees (1-3% per transaction — you pay)
- Third-party API license costs (e.g. SAP, Salesforce — you pay)
- Load test for 10k+ concurrent users (architecture review separate 590 EUR)
- Server costs (~20-50 EUR/month Hetzner — you pay)
- More than 25 API endpoints (hourly rate or new feature flat rate)
These items can be requested separately — we make an individual offer.
Security comes standard.
These items come with every package – including this one:
- HTTPS / SSL with auto-renewal
- Firewall, brute-force protection & rate-limiting
- Dependency scan for known CVEs
- Backup strategy in place
- No secrets ever in the repository
- GDPR-compliant cookie banner (for EU clients)
- Code review and release gate before go-live
- 30 days post-launch support (bugfixes included)
What clients usually ask
How long does it take?
8-12 weeks — depends on number of external APIs and business logic complexity.
Which payment provider — Stripe or PayPal?
Stripe for modern SaaS / subscriptions. PayPal for classic shops or DACH-specific. Both work.
Can I add a 3rd external API later?
Yes — hourly (95 EUR/h) or flat rate per integration (290-690 EUR).
How is GDPR handled?
Data export (Art. 15) and deletion concept built-in, GDPR-compliant cookie banner, DPA contract with you, servers in Germany (Hetzner Falkenstein/Helsinki).
What if my requirements grow before build?
We clarify scope in the briefing. Extensions before start: additional quote. During build: small adjustments OK, bigger ones as change request.
What does a second language (e.g. French) cost?
Content structures are already multilingual — you translate in admin or via DeepL. Pure technical adjustment 290 EUR.
Important note
The price shown is a non-binding estimate. Actual effort is determined individually after a free briefing call and provided in writing.
Have a project?
Tell us what it is about. In a first conversation we work out with you whether and how we can help – free and without obligation.