App development: from idea to the app stores.
App development with us means one codebase for iOS, Android and desktop, concept and design included, device tests and the launch in both stores. Costs and timeline are settled in a short first call.
One codebase
iOS, Android, Windows and macOS from a single Flutter project. You pay for the app once.
Our own apps in the stores
We built Pauly and Chess Clock ourselves and still run them. You can download both today.
Reply within 24 hours
You usually get a first assessment of feasibility and effort within one day.
See what we build.
Screenshots from apps we developed ourselves and run today.
Dictate your list instead of typing
Speak, and the list writes itself: Pauly extracts items and quantities from natural speech. Built from one Flutter codebase for iOS and Android.
What to know before you have an app developed.
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The price follows the feature scope
A focused MVP costs far less than an app with user accounts, a backend and integrations. After the first call you receive an itemised estimate.
More on this
Effort is driven by the number of screens and roles, a backend with integrations, and special features such as offline mode or payments. The estimate is free and without obligation.
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An MVP is ready in weeks
A first version with the core feature is testable within a few weeks, depending on scope. An app with a backend and store launch takes longer.
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Every one to two weeks you see a new build on your own device. Review by Apple and Google is planned in from the start.
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One codebase for every platform
With Flutter, one project becomes the app for iOS, Android, Windows and macOS. Updates ship everywhere at once, maintenance is paid for once.
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Two native teams mean duplicate code, bugs and maintenance. When deep Apple integration is the priority, we build natively with SwiftUI. With an existing web team, React Native is often the better fit.
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AI speeds us up, experience decides
We build every app AI-assisted because it is faster. Architecture, store compliance and maintainability come from running our own apps.
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You can build a prototype with AI yourself today. A product that passes store review and can still be developed further in two years depends on details: error handling, offline behaviour, battery usage and the usual reasons the stores reject apps. As an app agency we build documented and ready for handover.
What you can have developed with us.
New app development
Concept, design, development, device testing and publication on the App Store and Google Play.
DetailsMVP development
The smallest sensible version of your idea, quick to market and ready to grow later.
Request an MVPApp development for companies
Internal tools, field service apps and process apps connected to your existing systems.
DetailsCross-platform apps
One codebase for iOS, Android, Windows and macOS with native performance.
DetailsiOS app development
iPhone and iPad apps with App Store launch, from the same codebase for Android on request.
DetailsAndroid app development
Apps for the whole range of Android devices, including Google Play launch and Material Design.
DetailsCustom software
Web applications, desktop tools, integrations and automation beyond the app.
DetailsMaintenance and takeover
New features, updates or a new vendor for your existing app, including code written by others.
Request maintenanceNot sure where to start?
New app, MVP or taking over an existing app: describe your situation in a few sentences and we tell you which route is the economical one.
You can download our apps today.
Pauly · dictate your shopping list
Pauly is our Flutter app: dictate your shopping list, get it categorised automatically, sorted by store layout and shared with family in real time. One codebase for iOS and Android, exactly how we build your app.
Chess Clock · Blitz Timer
We build native too: Chess Clock is our own SwiftUI app, a chess clock with Fischer, Bronstein and delay increments, tournament time controls and Live Activities on the Lock Screen. One Swift codebase for iPhone, iPad, Mac, Apple Watch, Apple TV and Vision Pro, works offline and needs no account.
How your app project runs.
First call
We clarify idea, target group and budget and tell you whether and how it can be built.
Concept and quote
Effort estimate with feature scope, timeline and milestones.
Design and development
Wireframes first, then short development cycles. You test early on your own device.
Launch and operations
Submission to the App Store and Google Play, then maintenance and further development on request.
Frequently asked questions about app development.
How much does it cost to have an app developed?
It depends on the feature scope. A focused MVP is far cheaper than an app with user accounts, a backend and integrations. You do not pay for iOS and Android twice. After the first call you receive a free effort estimate.
How long does app development take?
An MVP is often ready within a few weeks, depending on scope. A complete app with a backend and store launch takes longer. The timeline is fixed in the concept, with milestones.
Can I just build an app myself with AI?
For a prototype, yes. For a product that holds up in the App Store and stays maintainable, rarely. AI produces code but no architecture and no store compliance. We work AI-assisted ourselves, with the experience of our own store apps.
Which platforms do you develop for?
iOS (iPhone and iPad), Android, Windows and macOS, usually from one shared Flutter codebase. That saves cost and gives identical behaviour on every device.
Do you also build marketplace apps?
Yes, two-sided platforms such as booking, brokering or trading are common requests. We start with one side of the platform and add the second afterwards. Payments, ratings and commission logic are planned in from day one.
Can I start with a small version?
Yes, and we recommend it. An MVP brings your core feature to actual users quickly, also as an app for a small or mid-sized company. You learn from the feedback and then expand.
Do you take over existing apps?
Yes. We audit the existing code, name its condition and risks, and then take over development and maintenance, even if another vendor built the app.
Have you published apps of your own?
Yes. Pauly (getpauly.com) is our voice-controlled shopping list app on the App Store and Google Play, built with Flutter. Chess Clock is our SwiftUI chess clock on the App Store.
App development in your city.
Remote across Germany and Austria, on-site meetings by arrangement.
Ready to have your app developed?
Tell us about your idea, whether a sketch or a full specification. You get a first assessment, usually within 24 hours.
Start your app project.
Describe your app idea in a few sentences. We reply with an assessment of feasibility, effort and the sensible next step.
We usually reply within 24 hours.
Remote and on site in Germany, Austria and Switzerland. International projects on request.
Our app technologies in detail.
Flutter Agency
Cross-platform for iOS, Android and desktop, with our own Flutter app in the stores.
Learn moreReact Native Agency
Cross-platform from the React world, a good fit when you already have a web team.
Learn moreSwiftUI Agency
Native apps for iPhone, iPad and Mac when Apple integration matters most.
Learn more