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Vduce Technology
Flutter & React Native agency

Apps people open every day, built once for iOS and Android.

We build cross-platform mobile apps with Flutter and React Native: consumer apps like the WorryTree anxiety-relief app, operational apps for cleaning staff and facility teams, and companion apps for IoT platforms. One codebase, native performance, and an API built by the same team.

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At a glance

Typical timeline
MVP: 8–12 weeks. Prototype: 2–3 weeks.
  • Flutter
  • Dart
  • React Native
  • Expo
  • TypeScript
  • Swift
  • Kotlin
  • HealthKit
Who it is for

For start-ups launching a first app, health and wellbeing companies, and businesses that need a reliable app for staff in the field.

Problems we solve

  • Two separate native apps double your budget and your bugs.
  • Your current app has poor ratings because it crashes or feels slow.
  • You have an idea and a budget, but no technical co-founder.
  • Staff in the field still use paper checklists or WhatsApp groups.
  • App store rejections keep delaying your launch.
What you get

Mobile App Development

Clickable prototype

A Figma prototype you can test with real users before a line of code is written.

iOS & Android app

One Flutter or React Native codebase, with native modules where needed (camera, Bluetooth, health data).

Backend & API

Authentication, data sync, push notifications and an admin panel, built by the same team.

Offline-first workflows

Apps that keep working in basements, airports and car parks, and sync when the connection returns.

Store release

Store listings, screenshots, privacy labels and review handling for the App Store and Google Play.

Analytics & crash reporting

Privacy-friendly analytics and crash reports, so decisions are based on real usage.

Our approach

Flutter & React Native agency

  1. 01

    Prototype first

    We test the core flow with five to ten real users before we build it.

  2. 02

    Build the MVP

    Core features only, released to TestFlight and internal testing tracks every week.

  3. 03

    Launch

    Store submission, staged rollout and close monitoring of crashes and reviews.

  4. 04

    Grow

    A roadmap driven by analytics and user feedback, with releases every two to four weeks.

Flutter or React Native?

Both are excellent, and we use both. Flutter gives pixel-perfect, highly animated interfaces and is our default for consumer apps and operational apps with complex UI. React Native is a strong choice when your team already works in React or when you want to share code with a web app. We compare them in detail in Flutter vs React Native for business apps.

Apps we have built

  • WorryTree: a CBT-based anxiety-relief app for a UK company, built in Flutter with a NestJS API. Read the case study.
  • Sleep-diary app: a React Native app for a UK sleep-health company. Read the case study.
  • Washroom operations app: a Flutter app that sends cleaning staff to the right washroom at the right time, based on live sensor data.

What an app really costs

App budgets depend on platforms, number of screens, integrations and design level. Our app estimator shows effort and timeline in two minutes, and our article What does app development cost in Germany? explains the drivers.

After launch

An app is never finished: iOS and Android release new versions every year, and users expect improvements. We offer maintenance plans with OS updates, dependency upgrades, monitoring and a fixed number of improvement hours per month.

Get an estimate for your app

Related case studies

Similar project? Let’s talk

Worry-Tree Ltd

WorryTree: a CBT app that helps people manage worry and anxiety

  • Flutter
  • Dart
  • NestJS
View case study

Client confidential · United Kingdom

Sleep-diary app for a UK sleep-health company

  • React Native
  • TypeScript
  • Firebase Analytics
View case study
Further reading

Mobile App Development

What does app development cost in Germany in 2026?

Business6 min read

What does app development cost in Germany in 2026?

Realistic price ranges for MVPs, business apps and platforms, what really drives the budget, and how to get a quote you can trust.

Flutter vs React Native for business apps

Mobile5 min read

Flutter vs React Native for business apps

Both frameworks build excellent iOS and Android apps from one code base. Here is how we decide between them, based on apps we have shipped with each.

Frequently asked questions

  • How long does it take to build an app?

    A focused MVP takes 8–12 weeks from approved prototype to store release. Larger products are released in stages.

  • Do you publish the app in the stores for us?

    Yes. We prepare listings and handle the review process. The developer accounts should be in your company's name so you keep full ownership.

  • Can the app work offline?

    Yes, if the use case needs it. We store data locally and sync it reliably when the connection returns, including conflict handling.

  • Do you build health apps?

    Yes. We have built wellbeing and sleep apps for UK companies and know the extra requirements for privacy, accessibility and clinical content review.

  • What happens after launch?

    You can take the code in-house or choose a maintenance plan with OS updates, monitoring and improvement hours.

  • Can you improve an existing app?

    Yes. We start with a short audit of code, crash data and reviews, then fix the biggest problems first.

  • Is the app accessible?

    We design for screen readers, dynamic font sizes and sufficient contrast by default, which also matters for the European Accessibility Act.

Let’s talk about your Mobile App Development project.

A 30-minute call with a senior engineer. You leave with a clear next step, whether you work with us or not.

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Let’s talk