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Custom Web Application Development

Custom web and internet applications for your customers — client portals, booking platforms, e-learning and SaaS apps tailored to your business

High performance

Optimisation and caching for fast operation

Security

Encryption, authentication and data protection

Scalability

Applications ready for user growth

Integrations

Easy integration with external systems and APIs

Types of web applications

We design custom web applications for businesses — every solution tailored to your processes

Customer portals & client apps

Web applications for your customers — client panels, portals and login areas

from €500
  • Client panel & area
  • Sign-up & login
  • Notifications
  • Online payments
  • API integrations
  • Responsive interface
Request a quote

Booking platforms

Online booking systems with calendar and payments

from €750
  • Interactive calendar
  • Online payment system
  • Email/SMS notifications
  • Customer panel
  • Availability management
  • Booking reports
Request a quote

E-learning platforms

Comprehensive online learning solutions

from €1 250
  • Courses & lessons
  • Quiz & test system
  • Progress tracking
  • Certificates
  • Live streaming
  • Discussion forum
Request a quote

Portals & SaaS

Dedicated portals and Software as a Service applications

Custom quote
  • Scalable architecture
  • Multi-tenancy
  • Subscriptions & payments
  • RESTful API
  • Analytics dashboard
  • Customisation
Request a quote

How do we build web applications?

Proven Agile methodology — from requirements analysis to production deployment

1

Discovery & Planning

Requirements analysis, architecture and technology planning

1–2 weeks
2

UX/UI Design

Designing the interface and user experience

2–3 weeks
3

Development

Iterative programming with regular demos

6–12 weeks
4

Testing & QA

Comprehensive testing and quality assurance

1–2 weeks
5

Deployment

Production deployment and infrastructure configuration

1 week
6

Support & Maintenance

Continuous support, monitoring and development

Ongoing

Technology stack

We build web applications mainly in ASP.NET Core / C# + React — deployed on a dedicated VPS

Backend
ASP.NET Core
Backend
C#
Frontend
React
Frontend
TypeScript
Backend
Node.js
Database
PostgreSQL
DevOps
Docker
Hosting
VPS / Linux

Need a specific technology? Contact us!

Discuss the project
★ Our specialty

Need a CRM or ERP system?

Custom CRM and ERP systems are our specialty — built around your process, with integrations and no per-user licensing.

See CRM systems

Price calculator

Get a preliminary estimate for your project

Website price calculator

Choose a type and options — the price updates in real time.

Step 1 — type of site

Your estimate

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✓ SSL✓ Domain & hosting (1 year)✓ Training + revisions 30 days✓ 12-month warranty

The price shown is indicative — the exact quote is agreed after a consultation.

Frequently asked questions

Find answers to the most common questions

The cost of building a web application starts from €500 for simple systems (client panel, form with database). More complex applications — booking platforms, e-learning systems and customer portals — are priced individually after requirements analysis. The price depends on the number of modules, API integrations and the complexity of the business logic.
A website mainly serves to present your company and its offer. A web application is a tool that automates processes — bookings, customer accounts, online learning, payments. It runs in a browser but requires login, has user roles and operates on real-time data.
A web application is a broad category of browser-based tools — booking platforms, e-learning, customer portals. A CRM/ERP system is a specific type of internal application for managing your sales, processes and company data. Dedicated CRM and ERP systems are our specialty — see our separate CRM systems page.
A simple system with a few modules takes 4–8 weeks. More complex applications — e-learning platforms, ERP systems, SaaS apps — typically take 3–6 months. We work iteratively, so after each sprint you can see a working part of the system and provide feedback.
Mainly ASP.NET Core 8 with C# on the backend and React + TypeScript on the frontend. For databases we use PostgreSQL or SQLite. The whole thing is deployed on a dedicated VPS with Docker. If your project requires a different stack — let's talk.
Yes — we host web applications on dedicated VPS servers with Docker, SSL certificates, automatic backups and monitoring. Hosting for web apps differs from regular website hosting: it needs a runtime environment, a database and more resources. We handle the full setup and ongoing maintenance.

Contact us

We are ready to help deliver your project

Contact details

Address
ul. Świerzawska 12a/63
60-321 Poznań, Poland

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June 2026
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