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Mobile Apps. An app that feels native on both iOS and Android.

Cross-platform mobile apps with native look & feel for iOS and Android

Proposal within 48 h How we work on it
  1. Workshop
  2. Setup
  3. Sprint
  4. Build & Support

Fixed price after scoping · proposal within 48 h

Reviewed: September 2026

Mobile Apps
Mobile Apps
Mobile Apps

Cross-platform apps for iOS and Android from one codebase, built with React Native and Expo – with a native look & feel and, where needed, native modules in Swift or Kotlin.

We develop iOS and Android apps from one codebase with React Native and Expo. From UI/UX concept through development to App Store publishing - we deliver cross-platform apps with native look & feel, offline support, and push notifications.

Key Features

  • Cross-Platform
  • Native Feel
  • Offline-First
  • App Store Ready
  • React Native
  • Expo
  • TypeScript
  • EAS Build
  • EAS Update

We select the optimal tech stack for your specific requirements

How we work on it

  1. Workshop
  2. Setup
  3. Sprint
  4. Build & Support
(01)

Sprint

Four weeks on one goal, with something that runs at the end.

4 weeks · fixed price after scoping
(02)

Build & Support

We build the project out and stay alongside you once it is live.

after scoping, ongoing · fixed price after scoping; support billed monthly

Included

(01)

Cross-platform development (iOS & Android)

(02)

AI features & integrations

(03)

Native performance & UX

(04)

App Store & Play Store deployment

(05)

Push notifications & offline mode

(06)

Analytics & crash reporting

(07)

30 days of free bug fixing from final delivery

Not included

(01)

App Store optimization (ASO)

(02)

Marketing materials for launch

(03)

Backend development (if needed separately)

How it runs

(01)

Sprint: Design & Planning

UI/UX concept, user flows and technical architecture; selection of the core workflow for the beta

W1
(02)

Sprint: Build the core app

Cross-platform development of the most important workflow, backend connection and authentication; demo at the end of every week

W2-3
(03)

Sprint: Beta on test devices

Device testing and distribution of the runnable beta via TestFlight and Google Play internal testing to selected testers

W4
(04)

Build & Support: Expansion & store launch

Further features such as AI integration, offline mode and push in stages with a demo after each stage; then App Store and Play Store submission and monitoring

Build
(01)

E-Commerce

Related Use Cases
(02)

Booking System

Related Use Cases
(03)

Customer Support

Related Use Cases
(04)

Crafts & Construction

Relevant Industries
(05)

Healthcare & Care

Relevant Industries
(06)

Gastronomy & Hospitality

Relevant Industries
(01)

AI app development

Topic page
(02)

MVP development

Topic page
(01)Do you build native or cross-platform apps?
We primarily develop cross-platform apps using React Native and Expo, which allows us to build from a single codebase for both iOS and Android. This approach delivers native look & feel and performance while reducing development time and costs. For apps with very specific performance requirements or platform-specific features, we can also develop fully native apps in Swift/Kotlin.
(02)How long does mobile app development take?
We start with a Sprint of about four weeks. The goal is a runnable beta of your app's most important workflow in production-like quality, which you test on real devices via TestFlight and Google Play internal testing. Further features such as real-time sync, offline mode or AI integration we then build in stages in the Build & Support format, with a demo after each stage, up to submission to the App Store and Play Store. How many stages your app needs is defined after scoping. The Sprint is offered at a fixed price after scoping, with a quote within 48 hours.
(03)How do you handle App Store and Play Store submission?
We manage the complete submission process for both Apple App Store and Google Play Store. This includes setting up developer accounts, preparing app metadata and screenshots, ensuring compliance with store guidelines, handling the review process, and addressing any rejection issues. We stay up to date with current store requirements so that submissions pass on the first attempt whenever possible.
(04)What about app updates and maintenance?
In the Build & Support format we handle bug fixes, OS compatibility updates and feature enhancements; bugs you report within 30 days of final delivery are fixed free of charge in any case. For minor updates and content changes, we use Expo's EAS Update (over-the-air), which delivers changes instantly without App Store review. Major updates with native code changes go through the standard store review process. We also provide monitoring, crash reporting, and analytics to ensure your app runs smoothly.
(05)How do you ensure app security?
Security is built into every layer of our mobile apps. We implement secure authentication (OAuth, biometrics), encrypt sensitive data both in transit (TLS/SSL) and at rest, follow OWASP Mobile Security guidelines, conduct regular security audits, and ensure compliance with data protection regulations like GDPR. We also implement secure API communication, certificate pinning, and jailbreak/root detection when needed.
(06)Can you integrate with our existing backend?
Absolutely! We specialize in integrating mobile apps with existing backend systems, APIs, and databases. Whether you have a REST API, GraphQL endpoint, or custom backend, we can connect your mobile app seamlessly. We also handle authentication integration, data synchronization, and can work with your existing cloud infrastructure (AWS, Azure, GCP). If needed, we can also extend or optimize your backend for mobile-specific requirements.
(07)Do you build for both iOS and Android?
Yes. We build with React Native and Expo, so one codebase serves both platforms. For performance-critical apps we also build fully native in Swift or Kotlin.
(08)Can you integrate AI features into mobile apps?
Yes. We integrate computer vision, natural language processing, recommendation engines and custom ML models, connecting models such as Claude, GPT or Gemini, or your own or locally running models where needed.
(09)Do you handle App Store and Google Play submission?
Yes, we manage the entire submission process including account setup, compliance review, metadata optimization, and handling rejections. We stay up to date with current store guidelines throughout.
(10)How do app updates work?
We use over-the-air (OTA) updates for non-native changes, allowing instant updates without app store review. Major updates go through the standard store approval process.
(11)Is backend development included?
The app backend (API, database, authentication, cloud services) is included in the Mobile Apps service. Only separate backend projects for existing systems or standalone API development are not in scope – for that we offer our Enterprise API Platform service.
View all frequently asked questions

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Book a call Proposal within 48 h

Fixed price after scoping · proposal within 48 h