Software house

We build mobile apps, websites and web systems

App4Mobile takes a digital product from the first sketch to release: apps for iOS and Android, websites, web applications and AI-powered solutions. Design, code and deployment in one team.

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What we do

Four things we do really well

We're not an agency that does everything. We focus on digital products that people open every day: on their phone, in the browser or in a company dashboard.

01 / MOBILE

Mobile apps

iOS and Android — native or cross-platform. From the first screen in the design to release in the App Store and Google Play.

  • Native apps: Swift, Kotlin
  • Cross-platform: React Native
  • API integrations, push notifications, payments
  • Store release and later updates
SwiftKotlinReact Native
More about mobile apps
02 / SYSTEM

Web apps

Dashboards, internal systems and SaaS products — tools that genuinely bring order to company processes and save hours of work.

  • Admin panels, CRM, booking systems
  • SaaS products and customer-facing apps
  • PWAs that also work offline
  • Integrations, APIs, automated reports
AngularReactNestJSNode.jsMySQL
More about web apps
03 / WEB

Websites

Fast, lightweight company websites and landing pages — ones that load instantly and look good on every screen.

  • Company websites, one-page sites, portfolios
  • Landing pages for specific campaigns
  • Technical SEO and Core Web Vitals
  • CMS, analytics and cookie consent setup
TypeScriptNext.jsWordPress
More about websites
04 / AI

AI & automation

Language models plugged in where they make sense: customer service, document processing and the repetitive work nobody likes doing by hand.

  • LLM-based chatbots and assistants
  • Document analysis, content search (RAG)
  • Automation of repetitive processes
  • AI integrated with the systems you already have
OpenAI APIRAGPythonAutomation
More about AI and automation
How we work

Five steps from idea to a working product

No magic and no disappearing for three months. At every stage you know what's being built, what it costs and when it will be ready.

Conversation and analysis

You tell us what should be built and why. We ask questions, write down the scope and tell you straight what could be done more simply, faster or cheaper.

Design and prototype

Wireframes and a clickable prototype come before we write the first line of code. You see how the product looks and works before it goes into development.

Development

Short iterations and a working test version from the first weeks. Progress is visible all the time, not just at the end of the project.

Testing and launch

Testing on real devices and browsers, release in the App Store, Google Play or on a server. Domains, certificates, analytics — we take care of them.

Growth and support

We stay after launch: monitoring, fixes, new features and updates for new system and library versions.

Stack

Technologies we work with every day

We choose them to fit the project, not the other way round. If something can be done more simply with a different technology, we'll say so instead of billing extra hours.

SwiftKotlinReact NativeSwiftUIJetpack ComposeFirebaseApp StoreGoogle Play
TypeScriptAngularReactNext.jsNode.jsNestJSMySQLSocket.IODockerPythonOpenAI API
From idea to app storethe full product cycle
Direct contact with the teamno middlemen
Support after launchgrowth and maintenance
Blog

Guides before you start a project

What it costs, which technology to choose and what releasing looks like – we answer the questions clients ask us most often.

All articles

FAQ

Frequently asked questions

Costs, timelines, app store release and what happens after launch – short and to the point.

How much does a mobile app or a website cost?

It depends on the scope: the number of screens and features, integrations, and whether you need an admin panel and a backend. After a few sentences of description we reply with questions and a price range, and we prepare an exact quote once the scope is clear. The first conversation and the initial quote are free.

How long does a project take?

A simple company website usually takes weeks, the first version of an app takes months. You get a schedule broken into stages together with the quote, and you see a working test version within the first weeks of development.

Do you build apps for iOS and Android at the same time?

Yes. With React Native a single codebase serves both platforms. When maximum performance or full access to device features matters, we build native apps in Swift and Kotlin. We advise which approach makes sense for your project.

Do you help with publishing in the App Store and Google Play?

Yes. We prepare the descriptions and screenshots, set the app up in the stores, take it through review and publish later updates.

Do you maintain the product after launch?

Yes. We stay with the project after launch: monitoring, fixes, updates for new system and library versions, and new features.

Do you work remotely?

Yes. We meet online, work in shared tools and share test versions you can check on your phone or in the browser – location doesn't matter.

Where do I start?

Write to biuro@app4mobile.pl with a few sentences about your idea, a rough deadline and budget. We'll reply with questions and a proposal for the next step.

Contact

Interested in any of this? Get in touch

A mobile app, a website, a web dashboard or AI automation — if any of these is on your mind, drop us an email.

secure_channel ONLINE
> whoami
App4Mobile — the team behind mobile apps, websites and web systems
> contact --how
send an email, we'll reply with questions and a proposed next step [OK]
biuro@app4mobile.pl
What to write

A few sentences about your idea, a rough deadline and budget. That's enough to start.

What you'll get

A reply with questions, a proposed scope of work and a price range.

No strings attached

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