We develop apps that achieve goals

Enterprise quality meets boutique agility: we develop apps with clear architecture that have been proven to deliver business impact and growth.

For ambitious start-ups, medium-sized companies and corporations that don't have time for ‘second attempts’.

Success stories
with measurable results

GUTEFRAGE.NET / HIGHFIVVE

Anyone looking for an app development agency will be delighted with Johnny Bytes. We held a workshop with gutefrage.net on the topic of apps and app SDKs and had a very in-depth and detailed exchange. The knowledge and experience that Johnny Bytes brings to the table is remarkable.

Nepomuk Seiler
Head of Engineering, gutefrage.net
JUST HEALTH GMBH

Johnny Bytes was a complete game-changer for our digital health app. Their expertise is outstanding; they got up to speed in record time and drove our development forward with decisive technical insights. We absolutely recommend them for any complex app project.

Maximilian Roederstein
Co-Founder, JustHealth GmbH
EMPOWER GMBH

In the development of our software suite, we faced complex challenges. Johnny Bytes provided more than just strategic advice; they actively supported our development process and were decisive in its successful execution.

Stephan Kuhnert
Managing Director, empower GmbH
APOTHEKE LUX 99

We wanted more than just an off-the-shelf e-prescription app; we needed a solution perfectly tailored to our pharmacy's specific workflows. Johnny Bytes' expertise in digital health was clear as they understood and executed our vision in perfect detail. The result is our very own app, which is a tremendous asset for both our customers and our team. For anyone seeking a truly custom solution, you've come to the right place.

Tobias Loder
Inhaber, Apotheke LUX 99
READFY

With Readfy, up to half a million users regularly read over 130,000 ebooks for free. Johnny Bytes took over the apps for iOS and Android from our previous nearshore partner and not only brought them and the backend up to date in a very short time, but also ensured that in-app sales increased by 500%.

Philipp Ortmaier, CEO, readfy GmbH
Philipp Ortmaier
CEO, readfy GmbH
PAGOPACE

We were already able to offer our customers good hardware with our payment ring. However, Johnny Bytes helped us to build the perfect complementary software to take our product to the next level. We were kept up to date at every stage of the app development and were able to make requests immediately. With the new app, we can also sell our rings in retail stores, as customers can link their rings directly to their payment card on their cell phone.

Steffen Kirilmaz, CEO, PAGOPACE GmbH
Steffen Kirilmaz
CEO, PAGOPACE GmbH
FIRST AVENUE

Johnny Bytes has taken over the development and support of our guest information system TIPPTHEK and migrated it to a modern and sustainable architecture in a very short time. This allows us to install TIPPTHEK in thousands of South Tyrolean accommodations and provide up to 35,000 tourists a day with personalized information about their accommodation and the surrounding area.

Michael Hölzl, CEO, First Avenue GmbH
Michael Hölzl
CEO, First Avenue GmbH
STAZZLE

An agile team for whom customer satisfaction is just as important as quality, the Johnny Bytes team understands communication and requirements, asks the right questions, has a sense of humor and adheres perfectly to schedules. A strong partner that we recommend without reservation. Thank you for your support!

Tasso Mitsarakis, Product Owner, stazzle
Tasso Mitsarakis
Product Owner, stazzle
KOOPERATIONEN MIT HOCHSCHULEN

Together with Johnny Bytes, FH Aachen regularly conducts practice-oriented research projects as part of the Digital Lab. Most recently, prototypes for Alexa skills and AI-supported tourism solutions were created in this context. These projects are always an enrichment for our students, the university and the company.

Prof. Dr. Mathias Eggert, FH Aachen
Prof. Dr. Mathias Eggert
FH Aachen
Some of our clients

For companies that want to turn an idea into a scalable product.

We treat your project as if it were our own – with strategic foresight and a hands-on approach.

That's why we don't just develop, we actively contribute ideas and take responsibility. Because that's the only way we can make your idea economically viable and achieve success together.

Our services

Not just apps,
but complete digital products

Cross-platform and native apps, high-performance backends and intelligent automation – all from a single source.

We build the complete infrastructure that will make your idea a success.The result: a digital product in which the front end, back end and intelligently deployed AI work together seamlessly.

Our approach

The Johnny Bytes App Engineering Framework:
From Strategy to Growth

We take responsibility – not just code.

We accompany you on the journey from the initial idea to the launch of your customised, scalable app. Together, we define goals, develop concepts and implement them in the optimal solution. We value transparent and open communication, regular feedback and an agile way of working to ensure that we are always developing in the right direction.

01

Strategy & risk minimisation

In our discovery Llyer, we validate requirements, risks and genuine customer benefits. This ensures that we only develop what has a measurable impact.

02

Concept & Architecture

In our architecture layer, we develop the technical guidelines that will lead your product to success. This includes concepts for scalability, security, deployment strategies, and build vs. buy decisions. This helps us prevent rewrites later on.

03

Efficient development

Our build squads deliver features in parallelised streams — quickly, reliably and with clear documentation. Short feedback cycles and agile iterations enable high delivery speeds without compromising on quality.

04

stability guarantee

Automated testing, performance checks and security scans minimise release risks. Our hardening layer ensures that functions not only work, but also scale stably.

05

Rollout & Go-Live

We ensure a smooth rollout and support the go-live in all areas.

06

Growth & Long-Term Partner

An app doesn't just end up in the app stores: after launch, we actively optimise conversion flows, retention and feature adoption. Data-driven experiments ensure that your product continuously delivers measurable added value for your business.

Our References

Selected reference Projects

Not sure whether we are the right partner for you? We are happy to let our references and clients speak for us.

OnkoPass

Cancer Care app for outpatient cancer treatment

OnkoPass offers digital support and improved communication between doctors and patients – for personalised care and less administrative work.

Pharmacy App

App for the german pharmacy sector

Secure and user-friendly: redeem e-prescriptions on your smartphone.

Magic Ads

AI for publishers: Better sales through ‘magical’ banners

For a leading regional publisher, we created an AI driven innovative advertising app that automatically creates display banners.

View story

Readfy

E-books for everyone - free and unlimited

Innovation and stability for the number 1 free e-book reader app.

View story

Pagopace

Unique companion app for NFC wearables

Opening up new sales markets and increasing customer satisfaction for a payment wearable.

Start your app project
with Johnny Bytes

Discuss your app idea in a non-binding and free strategy meeting.

Get clarity on feasibility, costs, and timeframe - and start your project with experts.

Initial consultation regarding concept and technology
Insights into comparable customer projects
Estimated costs and duration
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