Desktop of the app agency lumind solutions
lumind solutions GmbH | Berlin

Agency for user-centered
App Development

We design and program
for Startups and SME.

Our services

App Agency Berlin

Why us?

lumind solutions is an app agency from Berlin. We develop native apps, web apps and cross-platform apps with great UX and added value for your users, customers or employees.


Free Initial Consultation

Receive a professional, comprehensive but non-binding consultation for your app project. You'll directly speak to an app expert, but without any expert gibberish. No worries.


Strategic Design

We're not only skilled designers and developers, but also entrepreneurs ourselves. To ensure your app's success we'll work on your mobile strategy together and never loose sight of the user's needs.


Affordable Apps

Cutting-edge technologies helps us to produce better and more cost-effective apps. Cross-platform frameworks allow savings of 40% compared to native app development.

More about our way of working.

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Contact us for a
free initial consultation

Portrait of director Kevin Röhl
Your personal contact

Our References

lialo is City Tour & City Rally

  • Category: Progressive Web App
  • Client: AS Apps GmbH
  • Description: Schöneberg through the eyes and ears of David Bowie? Or sporty through the Olympic Park? is a web app for digital city rallies and city tours. Many tours can be played for free in the web browser. But professional city guides can also offer their tours for sale.
  • Our services: Design, Front- and Backend-Development, Online Payment
  • Technologies: PWA React Redux Typescript Braintree Kotlin Spring
  • Website: Stadtführung, Schnitzeljagd & Stadtrallye - lialo

My Daily Input - Your App for new Knowledge

  • Category: Cross-Plattform-App
  • Client: My Daily Input GmbH
  • Description: The app for iOS and Android provides daily snacks of knowledge from a large variety of self-selectable topics. The app is free, but offers in-app purchases and a Pro subscription.
  • Our services: Design, App- & Backend-Development, Admin Panel
  • Technologies: React Native Typescript In-App-Purchase Nest.js Firebase React Admin
  • Website: My Daily Input

Internal app for employee development

  • Category: Progressive Web App
  • Client: REWE- Markt Andreas Lück oHG
  • Description: Staff appraisals are an important instrument for staff development. With the PWA, employees can self-reflect on their development monthly with the help of an interactive questionnaire and discuss the results with their managers.
  • Our services: Development of the Progressive-Web-App, Design & Illustration
  • Technologies: React.js PWA Survey.js Typescript Nest.js Firebase

Sellorado - Sell books & media at a fixed price

  • Category: React Native App
  • Client: Sellorado GmbH
  • Description: Sellorado buys books, CDs, DVDs and games at a fixed price. With the app, customers can scan their items via their smartphone camera, retrieve the offers and complete the sale. The app is available for iOS and Android.
  • Our services: Development of the React Native App
  • Technologies: React Native iOS Android Typescript React Query
  • Website: Sellorado

Protocol App for the construction industry

  • Category: Progressive Web App
  • Client: ibag – Ingenieurbüro für Arbeitssicherheit und Gesundheitsschutz
  • Description: ibag inspects construction sites and documents occupational safety. The PWA enables the recording of defects and hazards directly on site via tablet and the coordination with the colleagues in the back office who work on the PC. The process, which was previously carried out with Word, is thus digitalised and simplified.
  • Our services: Consulting, Development of the PWA & Database, Integration into Corporate-IT
  • Technologies: React.js Typescript PWA ServiceWorker Zustand Nest.js Firebase
Screenshots of the lumind Apps and an image of the lumind habitat

Diabetes Startup

  • Category: MVP
  • Client: lumind (Startup)
  • Description: The lumind habitat is a handy desktop-light for people with diabetes, that visualises blood glucose level with colorful light. Measurements from compatible glucometers are sent to the lumind app via bluetooth. From there they are synchronised with the light. We built lumind using the MVP-approach, testing and improving the product iteratively.
  • Our services: Idea, App Development, Hardware Prototyping, Evaluation
  • Technologies: native iOS Bluetooth Node.js Azure Platinendesign Arduino
Screenshots of the lumind Apps and an image of the lumind habitat


  • Category: Cross-platform App
  • Client: Own project
  • Description: Sell4More is a cross-platform app for comparing the most important German recommerce vendors. If you want to sell old books, dvds or games, you might face the problem that different vendors offer widely varying prices. The app provides a convenient way of price comparison and assigns the article to the vendors, ensuring that your profit gets maximized.
  • Our services: Concept & Design, App Development, Optimisation Algorithm
  • Technologies: React Native iOS Android Redux Spring Mixed-Integer-Programming
  • Website: Sell4More - Sell books & co for the best price

ConSus Calc-a-Cut

  • Category: Web-App
  • Client: ConSus - ANT Stationary Cutting Solutions GmbH
  • Description: ConSus manufactures an innovative waterjet cutter. Using the 'Calc-a-Cut' calculator, business customers can calculate cutting costs for different scenarios and compare the costs with conventional technology.
  • Our services: Design, Frontend-Development
  • Technologies: React Material UI Typescript
  • Website: ConSus

Klangkarten - Create greeting cards with your voice

  • Category: Progressive-Web-App
  • Client: Internal Project
  • Description: With a digital sound card, greetings and congratulations for christmas, anniversaries and other holidays can be transmitted as a personal voice message. Especially companies use sound cards as an creative and sustainable way to send greetings to their business partners and customers.
  • Our services: Design, Frontend- & Backend-Development
  • Technologies: PWA React Typescript HTML5 Firebase
  • Website: Klangkarten

Ticket Order System

  • Category: Web App
  • Client: Theater am Schlachthof, Neuss
  • Description: The client is a theatre, selling its entry tickets on various channels. A centralized backend gathers all the orders and allows staff members to process them. Home-printed tickets and electronic payment options reduce the effort for the theater and meanwhile increase the ticket sale over the website.
  • Our services: Development of the admin app and the database, integration into the website, electronic payment with Stripe
  • Technologies: Nest.js Typescript Stripe React.js HTML5

Parliament History Quiz

  • Category: Web-App
  • Client: House of History North Rhine-Westphalia
  • Description: The House of History in Düsseldorf offers guided tours for school classes about the history of the state parliament. With a two-part quiz, students can first prepare their exhibition visit and test their gained knowledge in a playful way afterwards.
  • Our services: Design, Frontend-Development
  • Technologies: React Typescript
  • Website: History Quiz
Our services

App & Web Development

We are problem solvers. Together with you, we analyze the opportunities and challenges in your organization and utilize user-centered, cost-effective solutions that will improve your products or services.


  • Brainstorming & Workshops
  • Drafts & Fine Concept
  • Requirements Engineering
  • UX-Design

MVPs & Prototypes

  • Technical Feasibility Analysis
  • Demonstrators for Investors & Customers
  • User Feedback
  • UX & Usability-Tests
More →

Mobile Apps

  • iOS & Android
  • Cross-Platform Apps
  • React Native
  • Firebase
More →

Web Apps

  • Progressive Web Apps
  • Interactive Frontends
  • Backend-Systems & APIs
  • Dashboards & Admin Panels
More →


Warschauer Str. 58a
10243 Berlin
2. Hinterhof, rechter Durchgang, 4. OG
no postal address

Personal Contact

Kevin Röhl
Phone: 0176 913 434 98