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KCD Services

Mobile apps for iOS and Android

KCD Studio builds mobile apps for iOS and Android in React Native and Flutter. One codebase serves both systems, and we also handle offline mode and publishing in the app stores.

individual quote Free quote, usually within 48 hours.

Free quote

Updated: 15 October 2026

What mobile apps does KCD Studio build?

  • customer apps for orders, bookings and loyalty programmes
  • apps for field sales reps and service technicians, with data from ERP
  • warehouse and stocktaking apps
  • companion apps for CRM systems and B2B panels

React Native or Flutter for a mobile app?

With either one you write a single app for iOS and Android. React Native uses JavaScript and TypeScript, so code is easier to share with a website or a React panel. Flutter has its own rendering engine and looks very consistent on both systems. The project decides, and KCD Studio works in both.

Cross-platform or native app?

A cross-platform app has one codebase, so it is cheaper to build and maintain, and that suits most business apps. Separate native apps (Swift, Kotlin) are worth considering when the app relies heavily on the phone’s hardware or needs top graphics performance.

What is an offline-first app?

An offline-first app also works without internet. It saves data on the phone and syncs it with the server when the signal returns. This matters for sales reps, drivers and service technicians, who need ERP data in the field whatever the coverage.

How much does a custom mobile app cost?

We quote mobile apps individually. The cost depends on the number of screens and features, offline mode, integrations with other systems and the graphic design. Developer accounts in the App Store and Google Play are paid separately. A preliminary quote with a price range is free.

Frequently asked questions

My mobile app crashes on iOS: where do I look for the cause?

Start with the crash reports from App Store Connect or an error monitoring tool. They show the place in the code and the system version. Common causes are unhandled denied permissions, running out of memory and differences between iOS versions. KCD Studio takes over and fixes existing apps.

Can a mobile app use data from Subiekt or another ERP?

Yes. The app connects to the ERP through an intermediate API, so a sales rep sees stock, prices and account balances on the phone, and an order placed in the field goes into the system.

Does KCD Studio publish apps in the App Store and Google Play?

Yes. We prepare the app for publication and take it through review in both stores.

Let's talk about your project.

The conversation and the quote are free and non-binding.

Describe what you need in a few sentences. We usually reply within one business day, and we typically prepare an initial quote within 48 hours of receiving the information we need.