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App Development Kiel Digital Solutions for Modern Businesses

We develop apps for businesses in Kiel — from MVPs to complex platforms for iOS, Android, and Web.

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Our Projects

Over 200+ design projects

300.000+
App Downloads for projects we have managed.
5.0
50+ Reviews

Not just developers, but real consultants for your app!

In over 7 years, we have learned what truly makes apps successful. That's why we don't just develop, but also support you with concept, design, and marketing – as a team by your side.

Team Vera image
Team Ivan image
50+
Designers

With our many years of experience, we help companies of all sizes – from small start-ups to established corporations. We understand the needs of your target audience and offer customized app development in Kiel that clearly stands out from the competition.

Successful software solutions require a holistic approach. Through close collaboration within our team, we ensure a seamless user experience – from conception to implementation. We don't just rely on developers; we also have our own designers and marketing experts. Using modern technologies like Flutter and React Native, we develop cross-platform apps with agile methods and handle the regular maintenance of your applications.

This is what structured product design looks like in practice.

From the early product idea to structured interfaces and scalable systems – our work shows how clear design helps teams build with more confidence and less friction.

Our own startup
30,000+ users

The app for anyone who loves cars and motorsport!

DeepDays is the app for car events, community voting, and digital ticketing. From the initial idea to UX UI design and technical implementation, we developed the product entirely ourselves and quickly scaled it to over 30,000 users.

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A festival that lets you play along.

For the Glücksgefühle Festival, we developed an app that offers 200,000 visitors interactive experiences – from ticketing and gamification to live communication.

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UX/UI Design
Web App
Our Own Startup
10,000+ Users

Club Management for Leipzig's Night Owls

Clubkit is our white-label solution for smart ticketing. We built it to work like the best bouncer in town.

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clubkit logo
UX/UI Design
Mobile App
Web App

The platform for pet owners and pet professionals

With PetPlanner, pet owners can find suitable service providers nearby, book appointments online, and keep track of their pet's health data, appointments, and important information at all times.

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Recruiting Software on Autopilot

Recruiting is often chaotic and manual. With Funellab, we built a platform that automatically filters, organizes, and perfectly matches applicants.

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Web design
Artificial Intelligence

Energy that adapts to your life.

Clever-PV wanted more than just an app – they wanted to give households control over their energy. Our task: a UX and UI design that makes data clear, intuitive, and understandable. 

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Clever pv logo

Complex CAD workflows made simple & intuitive.

Mensch und Maschine stands for CAD and BIM software. We have developed an intuitive solution that simplifies complex processes and seamlessly connects teams.

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mensch und maschine logo
UX/UI Design
Product Refresh

Cook along with your favorite creators

Scoops connects food creators with their community in a new way. Influencers share their recipes directly in the app, and their followers can unlock them via a subscription, cook them, and become part of an active food community.

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From a UI dinosaur to a modern management hub.

Avviso manages parking violations and reminders – but its UX/UI still looked like Windows 98. We streamlined the user experience and brought the software into 2024.

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avviso logo
UX/UI Design
Product Refresh

Clearly manage thousands of vehicles

Smartmove needed a solution for efficient vehicle fleet management. We developed an intuitive interface with smart automations – understandable in just 10 seconds.

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UX/UI Design
Website Design
Web App

App Development in Kiel: Full Service from Design to Marketing

Developing the perfect app for your business doesn't have to be complicated. Our proven process makes it easy.

01

Strategic Planning & UX Design

Concept Development, User Experience Design, and Prototype Creation

Every app begins with a thorough analysis: Who are the users? What problems should the app solve? Which features are essential? Through workshops and requirements analyses, we collaboratively establish the foundation for a successful project. Using tools like Figma, we then create interactive prototypes that simulate the future user experience. Our UX/UI designers ensure intuitive operation, clear structures, and modern aesthetics. This early visualization allows for quick feedback and reduces subsequent adjustment costs.

free
02

Development & Scalability

Mobile App Agency in Kiel for Android and iOS

For technical implementation, we rely on modern frameworks, clean code, and agile methodologies like Scrum. Depending on project requirements, we develop natively (with Swift or Kotlin), hybrid (e.g., with Flutter or React Native), or as a Progressive Web App. Our dev teams work in short sprints, regularly coordinate with clients, and continuously test new features. The result is a stable app that can be flexibly expanded and maintained long-term.

03

Backend Architecture

App developers in Kiel with cost-optimized and high-performance backend solutions

The backend forms the technical backbone of every app. We develop scalable and secure server structures using cloud services like AWS, Firebase, or Supabase. We prioritize performance, data protection, and extensibility. We develop REST or GraphQL-based interfaces to connect your app with internal tools or external systems. Utilizing serverless architecture enables flexible load distribution and reduces operating costs.

04

App Marketing & Visibility

Excellent marketing for your native apps and web applications

An app can only be successful if it's discoverable. That's why we offer comprehensive digital marketing support: from App Store Optimization (ASO) and SEO to social media campaigns. We analyze the competition, identify relevant keywords, and optimize your app's title, screenshots, and descriptions. This ensures your app is not only a technical success but also a commercial one.

Louis Nell

CEO

Louis was never one to do things by halves. As a developer at the railway company, he programmed software that revolutionized the system – and was quickly scrapped precisely for that reason. Frustration turned into opportunity: he quit and founded KNGURU. Today, Louis and his team develop digital products that offer real value – and aren't hindered by corporate politics.

Team Louis image

Ivan Prosic

Lead designer

Four years ago, KNGURU was looking for a designer. Ivan responded on Reddit, participated in a design challenge despite a packed schedule – and prevailed. Today, he's our Lead Designer and, according to him, can even operate Figma in his sleep. He has a knack for pixels – and incredible patience for clients who "just want a quick tweak."

Team Ivan image

Vera Grosse

Project Manager

Vera came as an intern – and simply never left. Today, she juggles clients, projects, and designers simultaneously (and still finds time for a shisha). She's the only person on the team who voluntarily opens Excel spreadsheets – and even with enthusiasm. Plus, Vera can implement project plans faster than Ivan can swim (which he reluctantly admits).

Team Vera image

Strahinja Nikolic

Graphic and Product designer

Strahinja is not just a designer, but a true go-getter. He builds his own businesses on the side, thinks like a founder, and knows exactly how UX becomes not just beautiful, but profitable. With KNGURU for years, indispensable for years. Always by his side: his dog Bebba, our unofficial team mascot (no, that's not Bebba in the photo).

Team Strahinja image

+ more Kngurus, 
when you need them.

Lean or XXL? We scale with you. If your project needs more power, we bring in specialists. Developers, strategists, motion designers – all ready when you need them. Kngurus on demand!

Founders & Companies, who have entrusted us with their ideas & apps.

Good UX/UI design is not just about the outcome, but also about the collaboration that leads to it. Read here how our clients experienced their journey with us.

5.0
1200+ reviews
Davide Faga

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Ready for your own app in Kiel? Get professional support!

Do you have an idea but no clear path to implementation yet? No problem. In a non-binding initial consultation, our team will show you how your vision can become a functional app for Kiel – efficient, modern, and precisely tailored to your goals.

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 What advantages does a custom app offer my company in Kiel?

A custom app is precisely tailored to your business processes, target groups, and industry specifics. It increases efficiency, enables new digital services, and creates competitive advantages – especially in a diverse location like Kiel.

How exactly does the collaboration work during app development?

We start with analysis and conception, develop interactive prototypes in Figma, align every feature with you, and implement your app in iterative sprints – transparent, agile, and user-centric.

What technologies do you use for development?

We work with Vue.js, Flutter, Node.js, Firebase, AWS, and modern frameworks for AI, AR/VR, or blockchain. The selection depends on your project goals and desired features.

Do you offer long-term maintenance and further development?

Good UX UI design prevents costly errors in development. If the structure, user guidance, and interface are clear beforehand, development can proceed faster, cleaner, and with less rework later on.

Are your app solutions suitable for complex industry requirements?

Absolutely. We develop industry-specific features for logistics, tourism, medicine, education, and energy – with interfaces, design, and UX precisely tailored to your target audience.

What does your app cost?

The more features your app needs, the higher the costs will naturally be. Therefore, we always recommend developing the app as compactly as possible initially and expanding it gradually later.

Start your estimate

Answer a few quick questions and get an estimate for your app's cost in under 2 minutes.

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1/6
What category would you place your app in?

To estimate an app's cost, the underlying idea is particularly crucial for defining its scope.

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2/6
How many different
screens does your app need?

The number of screens your app will include provides a good basis for estimating development costs.

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3/6
Can users register in your app?

User profiles and their interactions often account for a significant portion of the development effort

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4/6
Do you already have a design for your app?

The design is the blueprint for every app. If you don't have a design ready yet, we'd be happy to help you with that too.

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5/6
Do you need a dashboard?

With your own dashboard, you always have all your app's data in view and can also create and manage content yourself.

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6/6

Book your free initial consultation now.

Based on similar projects we've supported in the past, we estimate your project will fall within a price range of approximately 65.000€ to 85.000€

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6/6
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Next step

Get a free initial consultation now.

65.000€ - 85.000€ 

Want to discuss the possibilities for your app with us?
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App Agency Kiel - Innovative App Development for all Platforms

progressive web apps

A Combination of Website and App

If your project is manageable and you don't want to invest much, a Progressive Web App (PWA) can be a cost-effective option. PWAs are based on classic web applications and use specific JavaScript functions to work offline – launchable like a normal app via a shortcut.

However, PWAs cannot be published in app stores and often do not achieve the look & feel of a native app. Nevertheless, they offer the advantage of covering all platforms simultaneously and being cost-effectively developed from existing websites. For simple dashboards or ordering platforms, a PWA is often sufficient. With growing requirements, the codebase can be converted into a hybrid app.

cross-platform apps

One App for All Devices

If your app should feel like a native application without having to invest in each platform individually, cross-platform apps are the ideal solution. They make it possible to cover all mobile operating systems with just one codebase.

We rely on this approach and deliberately forgo native solutions. Thanks to modern frameworks like React Native, cross-platform apps do not have to lag behind native apps in design, performance, and functionality.

Programming and App Development in Kiel: KNGURU - your specialist for individual apps

Tailored Digital Applications

In app development in Kiel, we place great emphasis on individual solutions. Our goal is to support our clients as best as possible so they can stand out from the competition – and that can only be achieved with unique approaches.

Every process begins with thorough consultation. Together, we analyze the competitive landscape and identify areas for improvement. Based on this, we develop creative solutions with strong USPs and a design that delights even demanding users.

Long-term Support and Further Development

After the go-live, the real work begins for our mobile app development team in Kiel. The app requires regular updates, and feedback from the app stores must be implemented promptly.

To avoid constantly onboarding new team members, not only our project managers but also the entire development team are permanently employed. This way, developers can support your project long-term – and nothing gets lost.

Digital Transformation as a Strategic Advantage

For the successful implementation of a digital project, it's crucial to have expertise not just in the core area. Otherwise, many areas would have to be outsourced to external partners who are not equally involved in the project.

That's why, as a full-service app agency, we offer a broad spectrum of in-house expertise. Whether it's backend, app development, marketing, or design – we bring all experts together under one roof so they can collaborate efficiently and pursue common goals.

Efficient App Development: The Technologies Behind Our Apps

Compelling Mockups with Figma

To ensure that the mobile app meets its original goals, it is crucial to involve customers early in the development process. Clickable prototypes are particularly valuable in this regard.

We don't want to strain your budget or overwhelm you with IDEs and coding. That's why we use Figma for our prototypes – allowing us to develop them quickly, cost-effectively, and intuitively testable. In the end, we export the design as HTML, which we then use for further development.

React.js for unlimited app development

Once you are satisfied with the prototype, we move into the implementation phase. We use solutions from the React ecosystem: from React.js with comprehensive functionality, to Next.js for server-side rendering, and React Native for standalone cross-platform mobile apps – working within a unified ecosystem ensures that the codebase does not need to be rewritten as requirements grow.

Reliable Backend with AWS and Firebase

The data generated by your app project after launch must be securely stored so that the backend remains stable even with great success.

To minimize the effort for your own servers, we rely on platforms like AWS and Firebase. These providers offer sufficient capacity to function reliably even during peak loads – and largely handle backups and data security, so you can fully concentrate on the further development of your app.

App development with React Native and cloud technologies.

We rely on state-of-the-art technologies in app development to ensure your app remains stable even with high user numbers.

Front-end
React Native
React
Next.JS
Back-end & Infrastructure
Firebase
Node.JS
Supabase
Railway
Integrations
RevenueCat
Stripe
Google APIs
Github
Design & Prototyping
Figma
FigJam
Illustrator
After Effects
AI Integrations
Gemini
Claude
ChatGPT

Your 30-minute meeting with real experts.

Whether it's an idea or an existing app – we'll tell you honestly where you stand. All of this is free, based on experience from over 100 projects and our own app with 30,000 users. Book your meeting now and get to know us!

How can we reach you?
Planned budget
Legal matters
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The first step is complete!

We have received your inquiries and will get back to you as soon as possible with more details. All the best, your KNGURU Team!

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