We build mobile apps and AI systems for a fraction of what an agency charges.
iOS and Android from one codebase, with a web admin and your own server, and AI built in where it pays off. AI agents write the code and a senior engineer reviews every line. That's how we built the Forni di Napoli app: we started in February, and it was on the App Store in July.
The first call is free. We reply within 24 hours.
Ohm Corp Kft.
We've been writing Java and Python for over 25 years. We worked at Amazon, Morgan Stanley, MSCI and Tesco, and that's where we learned to ship fast without breaking things. Banking, fintech and e-commerce are home turf, and we've also built a mobile app for a pizzeria and worked for a construction company and a law firm. These days AI agents write most of our code, but a senior engineer reads every line before it goes live. That's what makes it fast and cheap, and it's what keeps it from turning into “AI slop”: half-thought-through, unchecked code that falls apart six months later.
Explore our services or see our projects.
What we build
We focus on two things: mobile apps and AI systems. If the project also needs a website or a Java or Python backend, we build that too.
Mobile apps
One app for iOS and Android, in your branding. The Forni di Napoli app has push notifications, loyalty points, coupons, gift cards and table booking, plus a web admin where the restaurant launches its own campaigns. We handle App Store and Google Play review too.
Ask what yours would cost →AI engineering
We build AI into your product or your back office: document search that answers from your own PDFs and shows the source, an agent that pulls the order out of an email and enters it in your CRM, or a Hungarian-speaking chatbot or phone assistant that books into your calendar. You get a production system, not a demo.
Ask what yours would cost →Two humans and an AI agent.
Janos runs engineering, Ádám handles clients and strategy. Ohm, the AI, writes and deploys code at night too, and one of us reviews what it does.
Zadravec János
26 years writing software in Budapest, Berlin and New York. Before Ohm Corp: AWS billing at Amazon, Tesco's pricing and promotions engine, BILLA's online store, plus Morgan Stanley, UBS and MSCI.
Adam Katona
One of the founders of Ustream (now IBM Watson Media). He has spent 15 years since then mentoring and angel-investing in startups.
What we've worked on
What we've built recently.
Forni di Napoli: a loyalty app for two Budapest pizzerias
The restaurant got its own channel to guests instead of Facebook and newsletters: push campaigns, loyalty points, coupons, and gift cards redeemed with a QR code at the counter. Guests can also book a table or order through Wolt or Foodora from the app. It went from the first line of code to the App Store in under five months, and has 1,000+ downloads on Google Play and 5.0 stars on the App Store.
Appointment booking for a physio clinic
Patients book appointments on WhatsApp with a chatbot that sees the clinic's calendar and explains which treatment is for what. We also built an admin screen for the front desk.
Contract search for a law firm
It searches 100+ contracts, about 4,000 pages: it answers questions, shows the source, and maps which contract ties which company to whom.
Anti-money-laundering checks
At financial institutions, AI agents handle customer due diligence, PEP screening and sanctions-list monitoring, cutting 70–90% of the manual work.
People we've worked with
“Mr. Zadravec worked with exceptional foresight, was proactive, and showed strong commitment to our company and clients. Even under difficult conditions, he delivered reliable, high-quality solutions.”
“We worked together with János on several web projects. In fact, this collaboration continues today. János builds a thorough strategy before starting his projects, which leads the work to success.”
Have a question?
Tell us in a few sentences what the problem is or what you'd like. Janos reads it and replies within 24 hours. If it's urgent, call +36 30 406 6356.
1039 Budapest, Hungary