Custom software development
I build software that solves one company's specific problem.
If a process runs today in a spreadsheet, on paper, or across several disconnected systems, we look at how to make it simpler. If that needs a custom application, I build it.
I'm a developer, not an agency.
You talk to me about the project, I design the solution, and I write the code. That way you don't have to explain the same problem to three different people.
I have been building software for eight years: enterprise web applications, mobile apps and custom business systems. My main areas are Angular, cross-platform mobile development, REST APIs and SQL databases.
- Direct contactNo communication routed through a project manager.
- Custom-builtThe software fits the process, not the other way round.
- Hungarian or EnglishDiscussion, documentation and support in both.
- A clear quoteAgreed scope and deadline, settled up front.
What I do
- 01
Web applications
Internal company systems, admin panels and customer portals — barcode stock tracking, appointment booking, internal record keeping. For the cases where no off-the-shelf software fits.
Technologies
- 02
SaaS and subscription products
Building your own subscription product, from payment handling to user accounts. The arrangement is flexible: we can work with shared ownership, where I stay involved with the product after development, or with a full handover, where the finished system is exclusively yours.
Technologies
- 03
Invoicing and payments
Money is the part where a mistake hurts immediately: the invoice does not go out, the mandatory tax reporting is missed, or the payment stalls half way. So it gets its own attention rather than being tucked in among the integrations.
For example
- invoicing: Billingo, Számlázz.hu
- reporting to the Hungarian tax authority's Online Számla
- card payment: Stripe, Barion, SimplePay
- instant bank transfer and QR codes to the Hungarian national standard
- recurring fees and subscriptions
Technologies
- 04
Mobile applications
If a phone app is needed, we first check whether it genuinely has to be native, or whether an installable web app would do the job. I build for Android, for iOS, and cross-platform.
Technologies
- 05
Automation and integrations
A system instead of a spreadsheet, an automated flow instead of manual admin, and one connected solution instead of several separate ones.
For example
- Excel import and export
- automated reports
- scheduled jobs
- third-party API integration
- connecting business systems
- 06
AI integration
I add AI where it genuinely removes manual work. Not because it is fashionable, but because a step drops out of the process.
For example
- extracting data from a photo or a document
- classifying incoming text automatically
- identifying items that a plain search cannot find
- adding a single AI step to an existing system
Technologies
- 07
Websites
Fast, easily maintained company sites and landing pages. The goal is not to fit as much as possible onto the page, but to load quickly and say clearly what you do.
Technologies
I use whichever approach the job actually calls for.
Sometimes a native app is the right answer; sometimes an installable web app does everything that is needed. These four projects each solve it differently.
Native Android app
Klip
Location-based attendance and work-time tracking for field teams. The phone detects arrival at and departure from a work site automatically. The app works without a network connection and uploads the data later.
Native Android app
Collection Checker
Cataloguing board games and books with a camera. You can scan barcodes with the phone camera, or identify items from a single photo of a shelf.
Installable web app
My Casita
Household and family tasks in one place. A shared calendar, a shopping list, recurring chores, and a simple way to stop having to keep it all in your head.
Web app and AR
Clair Contour
Cataloguing and presenting artworks online for galleries. Through the phone camera an artwork can be placed on your own wall, with no app to install.
These are my own projects, which is why they are Android and web. In client work I have also built for iOS and with cross-platform frameworks — Flutter, Xamarin and Kotlin all feature in those eight years.
What I have built
- 01
My Casita — Open
A household and family organiser
Chores, a shared calendar, shopping and everything else the household needs, in one place. It does more than keep a list: it can suggest a task based on how much time and energy you actually have right now.
An installable web app that works on both phone and desktop.
casita.huLive systemPWA - 02
Klip — Open
Attendance and work-time tracking for field teams
Klip tracks attendance from where the phone is, not from a clock-in. Devices are paired with a QR code, so workers need no account of their own. The app keeps collecting without a network connection and syncs later.
Native Android app, web admin panel, Node.js and PostgreSQL backend.
kliptrack.comLive systemAndroidWebNode.jsPostgreSQL - 03
Clair Contour — Open
An online system for Hungarian art galleries
An artwork catalogue, high-resolution imagery, exhibition pages and private catalogues in one system. Artworks carry their exact dimensions, and the AR feature lets you see how a given piece would look on your own wall through the phone camera. Hungarian resale-royalty calculation and local pricing rules are built in.
- 04
Collection Checker
Barcode cataloguing with a camera and image recognition
From a single photo of a shelf it tries to identify several books or board games at once. It searches by barcode first, then falls back to image recognition for anything it cannot find that way. Matches are shown on the photo itself, and can be accepted or rejected one by one.
collection-checker.hu · coming soonIn developmentAndroidWeb - 05
Foglalás — Open
An appointment booking system for small service providers
For appointment-based businesses such as physiotherapists and personal trainers. The client picks a service and a time, and the provider sees bookings and their payments in a single calendar. The confirmation can carry a bank-transfer QR code to the Hungarian national standard.
- 06
Designs
Creative directions for CVs and web design demos.
A few smaller projects showing different approaches to the web.
Four steps, no surprises
- 01
We talk it through
First I get to know the current process. Building an application is not automatically the right answer. If something simpler would do, I will say so.
- 02
We plan it
We decide what the system has to do, what belongs in the first version, and what can wait. On that basis you get a written quote covering scope, deadline and price.
- 03
I build it
You can see where the project stands throughout. How the finished system looks is not a surprise revealed at the end.
- 04
I hand it over and stay reachable
After handover I can still fix, extend and run the system.
What people ask most
- How much does custom software cost?
- A day rate of HUF 100,000–120,000, or an hourly rate of HUF 17,500. For larger, well-defined work we can agree a fixed project price instead. Either way, the offer states up front what gets built and for how much.
- What kinds of systems have you built?
- Barcode cataloguing with a camera, location-based attendance tracking for field teams, an appointment booking system with payment handling, an artwork catalogue with AR, and a household organiser. What they have in common is that no off-the-shelf software fitted.
- Can you connect the system to my invoicing software?
- Yes. Billingo and Számlázz.hu both offer an open API, and reporting to the Hungarian tax authority's Online Számla system is mandatory anyway — I can wire these in so invoicing becomes part of the flow rather than a manual step at the end.
- How long does it take?
- It depends on the size of the system, but a fast turnaround is something I hold myself to. The deadline is in the written offer, and you can see where the work stands throughout — it is not first revealed at the end.
- Do you have capacity right now?
- Yes. When I can start depends on the size of the project, but I am comfortably taking on new work at the moment. Write or call and we will talk it through.
- Do you only write the code, or handle the admin too?
- The admin too. Dealing with VPS, email and hosting providers, domains, settings and negotiations — I take that part off your plate. Following things up is part of the job.
- Where do you work, can we meet in person?
- In Budapest and the towns north of it — Szentendre, Pomáz, Budakalász, Dunakeszi, Vác and the settlements around them — I am happy to meet in person. Beyond that I work over video calls, which is plenty for most projects.
Referral programme
I work with a worked-out referral and reference programme. If your referral turns into a project, you receive the amount fixed in the agreement up front — no haggling afterwards over what it was worth.
How the referral programme worksGot a process that needs sorting out?
If something in your company still runs in a spreadsheet, on paper, or across several separate systems, let's talk it over. A short conversation is usually enough to tell whether custom software is worth building for it.
The conversation is free.
In Budapest and the towns north of it I am happy to meet in person. Everything else works over a video call.
Where I travel
- Budapest
- Üröm
- Pilisborosjenő
- Budakalász
- Pomáz
- Szentendre
- Leányfalu
- Dunakeszi
- Veresegyház
- Vác