From Idea to App
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As App agency we develop applications for start-ups, SMEs, public institutions and companies with complex requirements. Whether it's a digital product catalog, customer portal, sales tool, logistics app or internal dashboard – we create individual apps that perfectly match the industry, business model and system landscape. We pay attention not only to technology and design, but also to a well-thought-out app architecture that can grow flexibly.
01 Apps for internal processes (e.g. field service, warehouse logistics, training)
02 Mobile Commerce applications (for stronger online sales)
03 Service apps (for customer loyalty & after-sales)
04 B2B portals & dashboards (for partners and suppliers
05 App-based platforms (for communities, events or learning)
Holistically conceived. Efficiently implemented.
For us, app development is not a single discipline, but part of a comprehensive digital strategy. We support our clients from target definition, conception and design to technical implementation and marketing. We rely on interdisciplinary teams, agile methods and close coordination with our clients. The result: digital products with substance.
We start with a deep understanding of target groups, business models and market conditions. From this, we develop a viable strategy – the basis for every successful app.
We design intuitive interfaces and create compelling user experiences. From wireframes to UX/UI Design up to clickable prototypes.
Whether native app, cross-platform or PWA: We develop high-performance, secure and scalable applications – individually tailored to requirements and infrastructure.
Our apps are not isolated solutions. We develop powerful backends and ensure seamless integration into existing systems.
After the go-live, we support our customers long-term: with hosting, monitoring, support and the targeted further development of the app.
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Clear goal definition and use cases
Target group-oriented User Experience Design
Clean architecture and maintainable code
Security, Performance and Scalability
Continuous further development and user centricity
We are not a classic agency – we are problem solvers, technology partners and impulse generators. With our interdisciplinary team of strategists, designers, app developers and marketers, we accompany software projects step by step - from the initial idea to sustainable scaling. We combine technical know-how with creative energy and a clear view of the essentials. We solve digital crises. For brands. Preventively, acutely, sustainably.
Native iOS Apps
Native Android Apps
Cross-Platform with Flutter or React Native
Progressive Web-Apps (PWA)
Anyone having an app developed quickly faces the question: Native App or Progressive Web App (PWA)? Both technologies have clear strengths – and the right path depends on the use case, budget, and goals. Here's an overview of the differences:
High demands on performance and speed
Need for device functions (e.g., camera, GPS, Bluetooth)
App Store presence & monetization via in-app purchases
Strong personalization & offline functionality
Long-term software projects with extensive functionality
Quickly implementable app projects with a small budget
Platform-independent use on all devices
Easy distribution via URL instead of App Store download
Web-based applications with responsive design
Projects that should evolve gradually
App development refers to the entire process of planning, designing, technical implementation, and publishing a mobile application for iOS, Android, or as a platform-independent PWA (Progressive Web App). Depending on the project goal, software development can be purely native, hybrid, or web-based. App development encompasses all phases - from ideation and UX/UI Design from backend programming to testing and going live in the App Store.
Basically, three types of apps are distinguished:
Native Apps are developed specifically for iOS or Android and offer maximum performance as well as access to all device functions.
Cross-Platform Apps (e.g., with Flutter or React Native) run on multiple operating systems with a common codebase.
Progressive Web Apps (PWA) are web applications that behave like classic apps – but run directly in the browser without a download.
The choice depends on budget, target group, scope of functions, and strategy.
The development time varies greatly depending on complexity, scope of functions, and desired platform.
MVPs (Minimum Viable Products) can be realized in approx. 3–4 months.
Complex applications with multiple modules, integrations, and user roles usually require 6–12 months or more.
At W3, we rely on agile project methods that enable usable interim results early on - with maximum flexibility for further developments.
The cost of app development depends on many factors: design effort, number of platforms (iOS, Android, web), backend complexity, desired features, and interfaces.
As an experienced app agency, after an analysis of the requirements, we create a transparent, realistically calculated offer - including timeline, resources, and scalability. This way, app projects with substance are created - without surprises.
An individually developed app not only strengthens the digital brand presence, but also…
… offers new sales channels
… optimizes internal processes
… improves customer loyalty
… enables direct user communication via Push
… creates data-driven insights into user behavior
In short: A well-designed app is a strong lever for digital transformation and business success – not only for corporations, but also for medium-sized businesses and SMEs.
Holistic, agile and collaborative. We start with an intensive discovery phase, in which goals, use cases, target groups and requirements are clarified.
This is followed by conception, design and technical implementation – in clear stages, with dedicated project management and regular coordination. Even after the go-live, we continue to support our customers – with maintenance, further development and marketing.
Yes – upon request, we support our customers through the entire App Store process:
Creation of store assets (screenshots, description, keywords etc.)
Optimization for App Store & Google Play (ASO – App Store Optimization)
Submission, testing, review communication
This ensures that the app is successfully and professionally placed.
After the go-live is before the next release. We take over hosting, monitoring, maintenance and targeted further development – based on user feedback and market changes. Upon request, we also analyze the app's KPIs and develop strategies for reach, engagement and monetization
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