Mobile App-Development

Your Project,

Your Rules

Partners

63375a2f316247867ea3529c_Projexion - Full Color Dark Back Horizontal

You're in the right place with us

If you're planning complex custom software, we’re the partner for you. We cover a wide range of disciplines and can solve (almost) anything – no matter the system or programming language.

Get it right from the start

With experienced pros by your side.

Modern technologies

We work with various programming languages like PHP, JavaScript, Java, Scala, Ruby – and many more. Our teams are also fluent in frameworks like React, Angular, PlayFramework, WordPress, NodeJS – and beyond.

Experienced developers

Our developers bring years of hands-on experience – many from freelance backgrounds. They think entrepreneurially, understand business needs, and work in stable, German-speaking teams – no AI experiments, just solid craftsmanship.

Flexible compensation

We offer a range of compensation models – whether in installments or one-off payments. We also support equity and revenue-share options.

App Development

We build high-performance, scalable apps for iOS and Android – with a focus on clean code, strong UX, and clear product logic. From MVPs to enterprise solutions: we think ahead, build with stability, and deliver fast.

300425_The_Key_01_Szenenfotos_Detailshots_0608

Our Key To Success

Enough experience to tailor processes to your requirements and context.

Contact

Get in touch – no strings attached.

Analysis

Let’s explore your requirements together.

Planning

A process tailored to your needs.

What our partners say

We value strong partnerships and the high quality of results.

"the key technology has played a key role in shaping our digital strategy"

As the founder of PROJEXION, I can say that the key technology has played a key role in shaping our digital strategy from the very beginning. The team got a deep technical understanding of construction-specific processes – from project controlling to integrating existing systems. When issues arose, they were quick to adjust. I value the collaboration as highly reliable. and I’m looking forward to what we’ll achieve together next.

Joe Wilson

CEO & Founder PROJEXION

"Their service mindset is outstanding and communication is excellent."

the key - technology UG delivers professional services, high-quality execution, and tailors every solution individually. I’m very happy with the results.
Their service mindset is outstanding and communication is excellent.

Kremena Wissel

Chief Marketing and Impact Officer / Managing Director at Sirius Facilities GmbH

"The CEO Karl Kröber keeps his word."

The CEO Karl Kröber keeps his word. New ideas are implemented right away – which is incredibly refreshing. A very dynamic team.

Marika Plogmaker

Dr. Albrecht & Plogmaker GbR Tax Advisor & Lawyer

"Karl was incredibly thorough and systematic..."

Karl was incredibly thorough and systematic, bringing to our attention details and contingencies that we simply hadn’t considered before he walked us through our roadmap factor by factor. His methodology left no stone unturned, empowering us to move forward with our build in confidence that we understood our requirements inside and out before we ever wrote a single line of code for our new system.