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iOS + Android

Mobile Apps

Mobile apps that solve real problems. We build apps for iOS and Android - from field team tools and product applications to solutions that integrate with the company's existing systems.
Book an intro call

After the first call, you receive an initial assessment and a recommended next step.

The challenge

When does your company need a mobile app?

No mobile access to data and functions needed outside the office. Manually transferring information between devices. Processes that could be handled by a single app, but today require several tools.

Technical details and delivery approach

B2B mobile apps give employees access to company data and functions outside the office - in the field, on a building site, at a client’s premises, between locations. Hexacode designs and builds apps for iOS and Android, with offline mode, integration with company systems, and post-publication maintenance.

We build in React Native - one codebase for iOS and Android, with native performance. But more important than the technology is who will use the app, in what conditions, and what data they need at hand.

Offline mode and synchronisation are the foundation of a field app, not an extra feature. We design offline-first architecture - users work with no signal, and data syncs automatically once they’re back online. The UX is designed for real conditions: high contrast in sunlight, one-handed use, minimum steps in forms, code scanning instead of typing.

Case studies

An example of mobile API integration? HistoriaSzkod.pl - a platform handling thousands of requests daily, whose data reaches end-user apps. HR Event Management System with 24/7 mobile participant registration.

What we deliver
  • UX designed for real conditions: readable in sunlight, one-handed use, minimum steps
  • iOS and Android from one codebase (React Native) - two platforms, one budget
  • Offline-first: data available with no signal, automatic sync once you're back online
  • Integration with your backend from day one - the app as part of the ecosystem, not a separate silo
  • Push notifications: critical information the moment it's needed, not in the evening
  • Mobile security: encryption, biometrics, remote wipe if a device is lost
  • Publication and management on the App Store and Google Play - without involving your team
  • Post-launch maintenance: crash-rate monitoring, OS updates, new features
Real scenarios

The apps we build most often

We built these scenarios for teams working in the field - integrated with company systems.

Scenario 01

Field app with offline mode

A technician goes back to the office to enter data from a site visit. Information gets lost, reports run a day late, and the manager doesn't know what's happening in the field.

How it works
  1. The technician opens the app on site - it works with no signal
  2. Fills in the form: photos, data, client signature
  3. Data saves locally and waits for a connection
  4. Once back online - automatic sync with the central system
  5. The manager sees the report in real time, without waiting for the technician's return
Data collected on site, not from memory. Reports available immediately. Zero retyping back at the office.
Scenario 02

Managing field jobs

Jobs on paper or in Excel. Statuses by text message. The manager phones to check progress. No photo documentation, no history.

How it works
  1. The dispatcher creates a job in the panel - it lands on the technician's phone as a push
  2. The technician accepts the job and navigates to the location
  3. Documents the work: before/after photos, checklist, time spent
  4. The status updates automatically - the dispatcher sees progress on a map
  5. The client gets a completion notification with a report
A real-time view of every job. Full photo documentation. No more phone calls about status.
Scenario 03

Participant registration and check-in

Event sign-ups by email, a list in Excel, handwritten signatures at the door. The organiser doesn't know who showed up and compiles the report a week later.

How it works
  1. The participant registers through a form in the app
  2. Receives a confirmation with a QR code
  3. On site - a QR scan and automatic check-in
  4. The organiser sees a dashboard: who arrived, who didn't, live attendance
  5. After the event - a ready report with participant data and statistics
Self-service registration, zero manual lists. A real-time organiser dashboard. The report is ready right after the event.
Process

What does building a mobile app look like?

Mobile scenarios and requirements

We define the key usage scenarios and business requirements: who uses the app, in what conditions, and what data they need at hand.

workshop + estimate

UX for real working conditions

Designed for the field, not the desk: high contrast in sunlight, one-handed use, minimal steps, code scanning instead of retyping.

prototype

Phased build and integrations

We deliver the app in phases - starting with the key scenario - and integrate it with company systems via APIs.

MVP in stages

Release and development

We take the app through App Store and Google Play publication, then develop the product based on data and user feedback.

ongoing partnership
Who it's for

This makes sense if...

  • 01 Your team needs data and functions in the field - not at a desk, not through a browser, but exactly where they work.
  • 02 A responsive website isn’t enough: you need offline work, push notifications, or device integration.
  • 03 The app should support a specific process and talk to the rest of your system - not become a separate data silo.
A different approach may be better if...
  • — There are no clear use cases, user groups, or decisions the app is meant to simplify yet.
  • — The app would operate as a standalone entity with no integration with company systems and data.
  • — You need a one-off launch with no maintenance plan or further development after publication.
FAQ

Frequently asked questions about mobile apps

Which platforms do you build for?

We build for iOS and Android from a single codebase (React Native) or natively where the project demands it. The result: two platforms, one implementation, lower cost.

Will the app work without internet access?

Yes, if the scenario requires it. We design offline-first apps - data saves locally and syncs automatically once the connection is restored.

Who publishes the app on App Store and Google Play?

We do. We prepare the complete submission package - screenshots, descriptions, privacy policy, answers to the platforms’ questionnaires. We manage the developer account, handle communication with the review teams, and plan releases so they don’t clash with periods of heavy use.

What does post-deployment maintenance look like?

We monitor stability, performance, and crash rate. We deploy fixes, system updates, and new features in regular sprints.

When doesn’t a mobile app make sense?

If the only argument is “our competitors have one” - that’s not enough. An app generates ongoing costs: system updates, monitoring, adapting to new iOS and Android versions. If users don’t need offline access, push notifications, or interaction with data in the field - a responsive website will do the same job for a fraction of the cost - and we’ll advise against the app.

How do you secure data in a mobile app?

A phone operates outside the controlled company network - it can be lost or stolen. So we encrypt local data, enforce biometrics or a PIN, and log users out automatically after inactivity. Server communication runs exclusively over encrypted connections, with short-lived tokens. If a device is lost - the app’s data can be wiped remotely without affecting the rest of the phone.

Have a question that's not listed here? Write to us - we'll give you a straight answer.

Contact

Describe a problem or an idea for a product

Describe what your team needs to do outside the office - and today does through a browser, on paper, or not at all. We'll come back with a recommended scope for the first version.

In a few sentences: what you want to build or improve, why, and by when. No tech details needed - we'll ask about the rest.

Prefer to write directly? [email protected]

After first contact we schedule an intro call and agree on a plan of action.