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Mobile Development. Ship to iOS and Android from a single codebase.

High-performance mobile apps. One team, one codebase, native feel on every platform.

Tell us about your project

Trusted by product companies at every stage.

Siemens
Siemens Healthineers
PwC
Geberit
Toyota
Rainbow
Chooose
Omnipack
Lexolve

The mobile market is moving fast. Most teams are not.

95%

of your codebase ships to both iOS and Android. One engineering effort, two platforms, full speed ahead. Source: Shopify Engineering & Swell Research, 2025/2026

40%

faster time-to-market with cross-platform development. Your product reaches users in weeks, not quarters. Source: BolderApps & Impact Techlab Outlook, 2026

40%

of enterprise apps will feature AI agents by year-end. The shift from static tools to autonomous software is already underway. Source: Gartner Strategic Technology Trends, 2026

The teams that move fast today will be the ones ready for what comes next.

Building apps on the platforms where your customers are

Deliver a seamless mobile experience to users wherever they are. Here's what we build.

Connected Devices

Mobile apps don't stop at the screen. For Stokado, we built a tenant app that gives users 24/7 smartphone access to storage units, real-time door unlocking, and full integration with physical access control systems. Digital keys, delivered through mobile.

iOS

Architect mobile apps for devices running iOS: iPhones, iPads, Apple TVs, and App Clips. Optimized for Apple's ecosystem, from the App Store submission process to native API integrations.

Android

Build mobile apps for the full range of Android devices: smartphones, tablets, and TVs. Designed to perform consistently across the fragmented Android landscape.

Cross-Platform

One React Native codebase deployed to both iOS and Android, and optionally to desktop and web. Faster to build, easier to maintain, and indistinguishable from native to your end users.

Industry-Specific Solutions

We speak your industry's language and ship faster because of it. Our domain expertise covers FinTech, Healthcare, EdTech, and Travel.

Tools We Build With

A mobile-first stack built for performance and scale

Work with engineers who've shipped to both app stores dozens of times and know what it takes to get approved, stay performant, and scale.

01

01

Mobile

React Native

Expo

Flutter

02

02

Native Tooling

Xcode

Android Studio

TestFlight

Google Play Console

03

03

Backend

Node.js

Python

REST API

GraphQL

04

04

AI & Automation

LangChain

OpenAI SDK

Anthropic SDK

05

05

Data Storage

PostgreSQL

MongoDB

Firebase

Redis

06

06

Infrastructure & Cloud

AWS

Azure

Google Cloud

Docker

GitHub Actions

07

07

Quality & Monitoring

Sentry

Why enterprises choose us

Why enterprises choose us

Move faster with AI-powered development

Our teams use AI tooling to speed up coding, testing, and delivery, so you get results sooner without cutting corners.

One codebase, two platforms

React Native means your iOS and Android apps stay in sync. One team, one set of features, one release cycle.

Accelerate time to market

Dedicated mobile teams work in parallel with your setup, so you ship faster without disrupting work already in progress.

Free your core team for strategic work

Hand off defined projects while your best people focus on what moves the needle most.

Scale capacity without hiring

Get production-ready mobile teams in days, not the months it takes to recruit, onboard, and ramp up full-time engineers.

Security-first, from day one

ISO 27001 certified. We build with security and compliance embedded in every stage of development, not bolted on at the end.

That's how we turn complex ideas into high-impact mobile products.

Graspify communication app in dark mode on smartphone for messaging and collaboration.

Graspify's budgeted brilliance: Transforming norwegian retail

Platform that introduces a science-based approach to the human learning process.

Check more case studies

Ready to ship your mobile app?

Let's talk about your goals. We'll tell you what's possible and how fast we can get there.

Tell us about your project

Work with a team trusted by top-tier companies.

Rainbow logo
Siemens logo
Toyota logo

Frequently asked questions

Do you build native iOS and Android apps or cross-platform?

Both. We specialize in React Native for cross-platform mobile development, which gives you a single codebase for iOS and Android without sacrificing performance or native feel. When native-only is the right call, we'll tell you.

How long does mobile app development take?

Most projects move from kickoff to first App Store or Google Play release within 10 to 18 weeks. Scope, integrations, and platform requirements all affect the timeline. We'll give you a realistic estimate before we start.

Can you update my app without going through app store approval?

Yes. We use CodePush to push JavaScript updates directly to users, bypassing the App Store and Google Play review process for eligible changes. For major updates, store submissions still apply.

What kinds of mobile apps do you build?

Consumer apps, enterprise tools, healthcare platforms, fintech solutions, connected device interfaces, and more. If it runs on a phone or tablet, we've likely built something similar.

Can you integrate with our existing backend or third-party services?

Yes. We connect your mobile app to your existing APIs, databases, and third-party services. Authentication, payments, push notifications, access control systems — all handled.

How much code can be reused between iOS and Android with React Native?

Up to 90% of the codebase. Platform-specific logic may require separate handling, but the vast majority of your app ships from a single source.

We build what comes next.

Company

Industries

Startup Development House sp. z o.o.

Aleje Jerozolimskie 81

Warsaw, 02-001

VAT-ID: PL5213739631

KRS: 0000624654

REGON: 364787848

Contact Us

hello@startup-house.com

Our office: +48 789 011 336

New business: +48 798 874 852

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