Web Applications

Your idea deserves
real software.

We turn complex business problems into elegant, scalable web applications — built for growth, not just the demo.

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Enterprise-grade tech. Startup speed.

We choose the right tool for the job — not the trendiest one. Here’s our standard arsenal:

React / Next.js
TypeScript
Node.js / Express
REST & GraphQL APIs
PostgreSQL / MongoDB
Supabase

Why a custom app beats off-the-shelf.

Built Around Your Workflow

No adapting your business to fit software. The software adapts to you — every feature built for how you actually operate.

Scale Without Limits

From 10 to 100,000 users, your application scales horizontally. No subscription tiers. No vendor lock-in.

You Own Everything

Your code, your data, your IP. Full source code handover on delivery. No dependencies on our continued involvement.

From idea to production.

01

Requirements Workshop

We map every user story, edge case, and integration point. You get a full technical specification before we write code.

02

Architecture Design

Database schema, API contracts, component hierarchy — every decision documented and reviewed with you.

03

Agile Development

2-week sprints with working demos. You see real progress, give real feedback, and stay in control throughout.

04

Deploy & Handover

CI/CD pipeline, production deployment, documentation, and developer handover if needed. Clean exits, no surprises.

Built like a product, not a project.

Real dashboards, real-time data, and architecture that scales — not a WordPress plugin stack.

Interactive dashboards & real-time data

Admin panels, user management, live charts, and API integrations — all custom-built to match your exact business logic.

DashboardUsersAnalyticsReportsSettings
Overview● Live
May 2026SL
Revenue€48,240↑ 12.4%
Active Users1,842↑ 8.1%
Uptime99.9%↑ 0.1%
Conversions3.6%↑ 0.4%
Revenue over time2026
Top Sources
Organic
72%
Direct
45%
Referral
28%
UserPlanStatusMRR
Ana K.ProActive€149
Marco B.BusinessActive€349
Lena S.StarterTrial€49

Why choose SintelLogic.

Full-stack expertise

Frontend, backend, database, and deployment — one team, one codebase.

Scalable architecture

Built to grow from 10 to 100,000 users without a rewrite.

Transparent process

Bi-weekly demos, full visibility, and no surprises at handover.

You own the code

Full source code handover. No vendor lock-in. Your IP, your data.

6+Apps Shipped
100%Code Ownership
2wkSprint Cycles
24hResponse Time

Ready to build something powerful?

We’ve shipped products for founders, agencies, and enterprises. Let’s talk about yours.