Mobile App Development in Vienna for iOS & Android

From the first idea to the store release: custom cross-platform apps built with Flutter – thoughtfully conceived, designed and technically implemented.

Use Cases

When Is a Dedicated App Worth It?

An app isn't automatically the best solution for every digital project. It becomes especially interesting when users interact with a product regularly, or when features are needed that go beyond a classic website.

01

Regular Usage

Fast access directly from the smartphone and a more product-focused user experience.

02

Push Notifications

Proactively inform users about new content, reminders or relevant events.

03

Offline Functionality

Make certain features and data available even without a permanent internet connection.

04

Device Features

Integrate camera, GPS or other smartphone features into the product.

05

User Accounts

Enable personalized content, individual data and recurring usage.

06

Complex Workflows

Structure mobile processes that go beyond a simple website.

07

App Store Presence

Make a digital product available as a standalone application via the Apple App Store and Google Play.

If a web app or responsive website makes more sense for a project, that should be part of the consultation too. I don't automatically recommend an app, but the technically and economically most sensible approach.

Decision Guide

Mobile App or Web App – What Fits the Project?

Mobile App

  • Installation via App Store / Google Play
  • Push notifications
  • Good access to device features
  • Offline functionality more achievable
  • Strong mobile user experience
  • Store release required

Web App

  • Directly accessible via the browser
  • No installation required
  • Updates can be rolled out directly
  • Often a lower barrier to entry
  • Useful for browser-based applications and internal tools

Which variant makes more sense depends on user behavior, required features, budget and long-term product goals.

Services

App Development for New and Existing Products

Custom App Development

Apps tailored to the specific product and requirements of the company.

MVP Development

A first working version of a product to validate idea, market and usage early.

Evolving Existing Apps

New features, bug fixes and technical improvements to existing applications.

Design-to-Code

Implementing existing Figma screens cleanly, responsively and as pixel-accurately as possible.

App Redesign

Modernizing existing user interfaces and targeted UX improvements.

Integrations

Connecting APIs, authentication, databases, external services and backend systems.

One Codebase for iOS & Android

For many app projects I work with Flutter. This allows iOS and Android applications to be developed from a shared codebase.

Shared Development

Less duplicated work for iOS and Android.

Consistent User Interface

Design and behavior can be controlled consistently across platforms.

Maintainability

New features and changes don't have to be developed completely separately.

Performance

Flutter is also well suited to more complex interfaces and production applications.

FlutterDartRiverpodFirebaseServerpodREST APIsApp StoreGoogle Play
Project Experience

App Experience from Independent and Production Projects

Pictolog PDF
Independently conceived, designed and developed

Pictolog PDF

An offline app for project management and report creation. All data is stored locally. Users can document progress and export reports directly as PDF.

My Role
  • Concept
  • UX / UI
  • Development
  • Technical Architecture
  • Release
Highlights
  • Offline Usage
  • Local Data Storage
  • PDF Generation
  • Project Management
FlutterDart
Aktionsfinder App & PWA
Project experience from my work at Marqably

Aktionsfinder App & PWA

Contributed to a live app and PWA with feature development, bug fixes and ongoing design updates within an existing codebase.

Role: Development team member at Marqably

Tiroler Tageszeitung App
Development team member at Marqably

Tiroler Tageszeitung App

Ongoing development of a news app with hundreds of thousands of active users. Worked on bug fixes, feature extensions, dark mode and continuous design updates.

Development Process

From Idea to Store Release

01

Initial Consultation

Clarify idea, target audience, feature scope, platforms and budget.

02

Concept

Structure user flows, features, navigation and technical requirements. We clarify which features truly belong in version 1 and which can be added later.

03

UX & Design

Define screens, components and interactions. If Figma designs already exist, they can be adopted.

04

Development

Technical implementation of the app with regular test builds for early feedback.

05

Testing

Check functionality, devices, screen sizes and typical usage scenarios.

06

Store Release

Preparation and publishing for the Apple App Store and Google Play.

07

Ongoing Development

New features, adjustments and maintenance after launch.

MVP Approach

Validate First, Then Expand Strategically

For new product ideas, not every planned feature needs to be built right away. An MVP focuses on the most important features that let the product be used and tested for real, for the first time.

The goal isn't to build as little as possible, but to build the features that are decisive for real-world use first.

01Idea
02Define Core Problem
03Must-have Features
04Build the MVP
05Real User Feedback
06Expand the Product Strategically
Cost Factors

What Does It Cost to Build an App?

Costs depend heavily on feature scope, design, backend, user accounts, integrations and platform requirements.

Scope

A small MVP with a few core features differs significantly from an extensive product platform.

Backend

A simple API requires different effort than a custom backend with complex business logic.

User Accounts

Login, roles, permissions and personalized content increase the feature scope.

Data

Local storage, cloud sync or complex data models influence the architecture.

Integrations

Payment, maps, external APIs or existing company systems can create additional requirements.

Offline Functionality

Local data and later synchronization require additional technical logic.

Design

An existing Figma design, or full concept and design work.

Platform & Release

iOS, Android as well as App Store and Play Store requirements.

After an initial consultation, the required scope can be structured and a realistic effort estimate created.

Get a Project Estimate
After the Launch

The Store Release Isn't the End

Apps keep evolving after launch. Operating systems change, user feedback comes in, and new features become relevant.

Existing apps can also be developed further step by step – either on a project basis or through ongoing support.

Bugfixes
New Features
OS Compatibility
Store Requirements
Analytics
User Feedback
Technical Maintenance

Technologies and Platforms

Mobile
FlutterDartRiverpod
Backend & Cloud
FirebaseServerpodNode.jsREST APIs
Platforms
iOSAndroidApple App StoreGoogle Play

The specific technical setup depends on the product, requirements and existing system landscape.

FAQ

Frequently Asked Questions About App Development

Costs depend heavily on feature scope, design, backend, integrations and technical requirements. After an initial consultation, the required scope can be structured and a realistic effort estimate created.

That depends on the scope. A focused MVP can be built much faster than a complex platform with backend, user accounts and numerous integrations. A realistic project scope and timeline is defined at the start.

Yes. For many projects I work with Flutter, which lets me build iOS and Android applications from a shared codebase.

Not necessarily. With cross-platform technologies like Flutter, a large part of the application can be built together. Platform-specific adjustments may still be necessary.

Flutter is a framework for building applications for multiple platforms from a shared codebase. I use Flutter especially for iOS and Android projects.

Yes. For new product ideas, a focused first version with the most important features can be built first. The product can then be expanded strategically based on real usage and feedback.

Yes. Existing applications can also be developed further through new features, bug fixes, integrations or design updates.

Yes. Existing Figma screens can be technically implemented as design-to-code and integrated into an existing or new app.

Yes. Publishing can be considered and technically prepared as part of the project.

Not necessarily. Depending on usage, features and budget, a responsive website or web app may make more sense. This decision should be clarified before development begins.

Yes. Depending on the use case, data can be stored locally and certain features used even without a permanent internet connection. Pictolog PDF, for example, is designed as an offline application.

Do You Have an App Idea, or Want to Develop an Existing App Further?

Tell me briefly what the application should do, who will use it and which features are already planned. Together we can clarify which technical approach makes sense.