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Mobile apps for iOS and Android from one Flutter codebase.

We build mobile applications that are thoughtful, clear and easy to maintain — connected to your backend, working offline when needed and published to the App Store and Google Play.

A good mobile app puts the right information and actions in someone's pocket — a customer, a field technician, a warehouse worker. Our mobile application service covers the whole path from idea to a published app, using Flutter so that iOS and Android are served from a single codebase.

What it is

We design and develop mobile applications with Flutter, a framework that lets one codebase run natively on both iOS and Android. That means features are built once, both platforms stay in step, and maintenance over the years is simpler than with two separate apps.

An app rarely stands alone. It needs data from your systems, it may need to use the phone's sensors, notify users at the right moment and keep working where the signal is weak. We take care of all of that — and of getting the app through the App Store and Google Play.

Who it's for

  • Companies that want to offer their customers a dedicated app for ordering, bookings, status updates or self-service.
  • Businesses with employees in the field, on production floors or in warehouses who need a practical tool on their phone or tablet.
  • Teams that need to connect a mobile app to an existing backend, ERP or other business system.
  • Companies with an existing app that has become hard to maintain across two platforms.

What's included

  • Flutter for both platforms — one codebase for iOS and Android, with a consistent experience on both.
  • Backend and sensor integration — connection to your APIs and business systems, and use of device capabilities such as camera, location or other sensors where the app needs them.
  • Push notifications and offline mode — timely notifications for users, and the ability to keep working without a connection and sync later.
  • Publishing to the App Store and Play — we prepare the app for review and publish it to both stores.

How we work

  1. Discovery — we align goals, users and scope: who will use the app, where and for what. The result is a clear plan and an estimate.
  2. Plan & architecture — we design the screens and a clickable prototype, decide how the app talks to your backend and what must work offline, and confirm the technical decisions.
  3. Development — we build in short cycles with regular demos and continuous testing, with test builds you can install on your own phone.
  4. Launch & support — we publish the app, hand over knowledge and, by agreement, take care of updates for new operating system versions and further development.

Typical situations where it helps

  • For example, a company whose service technicians fill in paper reports on site and want to record work, photos and signatures in an app that syncs when back online.
  • For example, a company that wants its customers to place repeat orders or track deliveries from their phone.
  • For example, a company that reads data from connected devices or sensors and wants to show it in a clear mobile interface.
  • For example, a company that maintains separate iOS and Android apps and wants to bring them together into one codebase.

Read more about the approach in our article One codebase for iOS and Android.

More than just the app

A mobile app is only as good as the systems behind it. Where needed, we also build the backend and APIs as part of our business software service, and the infrastructure it runs on through Cloud & DevOps.

Built in Kranj

int32 is a development team based in Kranj, Slovenia. Tell us about the app you have in mind at info@int32.si or through the contact page.

FAQ

Questions about mobile apps.

Why Flutter instead of two separate native apps?

With a single Flutter codebase we cover both iOS and Android, so features and fixes are built once and the app is easier to maintain over time.

Can the app work without an internet connection?

Yes, offline mode is one of the things we build. Which data and actions are available offline, and how they synchronise later, is decided together during planning.

Do you publish the app to the App Store and Google Play?

Yes. We take care of preparing and publishing the app to the App Store and Google Play.

How much does a mobile app cost?

Every project is different, so we prepare a price after an initial conversation and understanding the scope. We split the work into clearly defined phases, so you have an overview of the scope.

Tell us about the app you have in mind.

We'll get back to you with suggested next steps — no obligation.