Quantum IT is a small iOS studio in Croatia. We take products from first sketch to the App Store in Swift and SwiftUI — and we write the kind of code that is still easy to change two years later.
Free 30-minute scope call. No pitch deck, no account managers — you talk to the engineer who would build it.
Production experience across
Our engineering has led iOS work on products used by tens of thousands of people every day — among them a connected-home security camera platform, a US digital bank, an airline document system, and an AR antenna-alignment tool built for disaster-relief field operatives.
Most engagements start as one of these. If yours doesn't fit neatly, say so on the call — we would rather scope it honestly than sell you a package.
From a rough idea to a live App Store listing. We scope it, design the architecture, build it in Swift and SwiftUI, and take it through review ourselves.
Inherited an Objective-C codebase, a stalled project, or an app that crashes more than it should? We stabilize it first, then make it changeable again.
Shipping is not launching. Paywalls, subscriptions and store presence, built by people who run their own apps on the same stack.
A retainer for the part nobody quotes for: iOS version upgrades, new features, CI, crash triage, and being reachable when something breaks on a Friday.
We are deliberately iOS-only today, because that is where our depth is. Android is on the roadmap — if you need both platforms, tell us on the call and we will be straight with you about timing.
Client work is the business. Our own apps are how we stay honest: same App Store review, same paywalls, same crash reports, same two-star opinions. Every decision we recommend to you is one we have already paid for ourselves.
Your life in weeks
A private digital-wellbeing app that draws your life as roughly 4,170 weeks and shades the ones ahead by where your evenings actually go. No account, no cloud, no streaks.
Remember what you read
Turns a finished book into original spaced-repetition cards from the title alone. The Wall shows your books fading the way memory actually fades — and lets you stop it.
Calm bedtime ritual & stories
A structured wind-down for families: personalized stories where the child is the hero, and connection prompts before lights out. Built by a parent, for the hour that decides the night.
Survival diary: narrative choices in collapse
A swipe-driven survival game with four visible needs and five hidden personality axes. It is not really about surviving — it is about who you slowly become when surviving is all that is left.
Have the hard conversation
A single-use app that walks you to the conversation you have been avoiding: name it, face the fear, decide what needs saying, put it in the calendar. Collects no data at all.
Retired, but worth knowing
Comic Battle — real-time PvP with a custom TCP layer written from scratch; winner of "Most Visually Impressive Game", raywenderlich.com Readers' App Awards 2015. Define It! — a vocabulary builder past 80,000 downloads. Cherished — 1,000+ hand-made artworks for new parents.
The most expensive part of app development is not the code. It is the month spent building the wrong thing. So we spend the first week making sure we are not.
Thirty minutes, free. You describe the product; we ask the awkward questions and tell you plainly whether we are the right studio for it.
A written scope with what is in, what is deliberately out, a timeline and a price. Anything we cannot estimate confidently, we say so instead of padding it.
A TestFlight build every two weeks, on your device, from the first increment. You see the real app early, not screenshots at the end.
We submit, handle review, and hand you the repository, CI pipeline and documentation. You own the code — with or without us.
Anyone can get an app onto the store once. The difference shows up in month fourteen, when a new requirement arrives and the codebase either absorbs it or fights it.
We build as if we will be the ones maintaining it in three years. Often, we are.
No junior work billed at senior rates, and no layer of account managers between you and the person writing the code.
Clean Architecture, MVVM and SOLID applied where they earn their keep — and skipped where they would only add ceremony.
Automated builds, tests and TestFlight distribution set up in week one. On one project it saved the team half an hour, every day.
We ship apps that collect nothing unless the product genuinely needs it. It is a better position with users, and with App Review.
Repository, certificates, App Store Connect, pipelines and documentation are yours from the start. No lock-in, ever.
Seven years of remote client work across twelve projects and several timezones taught us to get scope and API contracts in writing before anyone opens Xcode.
A paragraph is enough to start. What the app should do, who it is for, and roughly when you need it live. You will get a real reply from an engineer within one working day.