Custom Web Application Development
I build custom web software for processes that off-the-shelf products do not cover. The multi-tenant enneagram testing platform I built end to end on my own is sold to institutions via licenses, auto-generates a 30+ page PDF report from a ~81-question test, and is still live on bitatesti.com. I apply the same approach to admin panels, customer portals, licensing and sales flows.
First step: Discovery & Feasibility — Free
Problems it solves
- Your processes run on spreadsheets and hand-kept lists; errors and lost time keep growing.
- You want to serve several institutions or customers from one platform, with data separated by permission.
- Reports and documents are prepared by hand; you need automated PDF / report generation.
- You want licensing, sales and user management in a single system.
- Off-the-shelf products do not fit your workflow, or are full of features you do not need.
What you get
- A web application: admin panel and user / customer portal
- Role- and department-based access control, multi-tenant architecture
- Database design (SQL Server / Entity Framework)
- Automated reporting and PDF generation, email notifications
- Deployment, source code and documentation
How we work
- 1
Free discovery call
I listen to your need, your current system and your goals, and we talk openly about what is technically feasible.
- 2
Scope and quote
A written scope, milestones, an exact price and a timeline. No surprise costs — what is included is clear from the start.
- 3
Build and regular demos
I get the most critical flow working first and share a clickable build on a test environment at every milestone.
- 4
Test and handover
Testing with real user scenarios, then deployment and handover with user documentation.
Tech stack
Related projects
Real projects I have built in this area.
Live product · bitatesti.com
Enneagram Personality Test Platform
A multi-tenant enneagram testing platform I built single-handedly: answer ~81 questions and it auto-generates a 30+ page personality report in the background. Sold to institutions via licenses and still live on bitatesti.com.
Otoeko · Software distribution platform
Otoeko Software Platform
A multi-component software-distribution platform combining an admin panel, a customer panel, a desktop manager, an online software market and an unattended installer.
Live on Google Play
Namaz Akışı — Prayer Assistant
A fully offline, privacy-first, open-source and ad-free Muslim prayer assistant. Published on the Play Store and actively developed.
Frequently asked questions
How much does a custom web application cost?
The price depends on the scope; there is no fixed price list. The easiest way to start is Discovery & Feasibility: requirements analysis, technical roadmap, rough plan and proposal document. Discovery and feasibility are free. The price and timeline of the project itself depend on its scope and come as a firm quote at the end of that work.
Should I buy an off-the-shelf product or get custom software?
If an existing product meets your need, I will recommend it. Custom software pays off when your process is specific to you, when you manage several institutions, or when licence costs of a packaged product keep growing. We assess this honestly in the discovery call.
Which technologies do you use?
C#, ASP.NET MVC, Entity Framework and SQL Server on the business side; Bootstrap or Next.js / React with TypeScript on the front end. This site itself is built with Next.js. The choice follows the project’s needs.
Can you modernise or extend my existing web system?
Yes. I first review the current code and database, then recommend — with reasons — whether a rewrite or step-by-step improvement makes more sense.
What happens after launch?
You receive the source code and documentation. If you need maintenance or new features, we plan them as part of the scope from the start.
Do you work remotely, and in which languages?
Yes. I am based in Türkiye (GMT+3) and work remotely with clients worldwide; meetings are held in Turkish or English and scheduled around your time zone.
Let's talk about your project
We clarify your need together in a short call; then I send the scope, exact price and timeline in writing.