Web app development: custom web apps, portals & dashboards
From the first idea through UI/UX and development to go-live, we support your web app end-to-end.
Right in the browser, no download and no app store: we build custom web apps, portals and dashboards that feel like real software – high-performance, secure and at home on every device.
Why a custom web app?
Whether customer portal, internal tool or digital product: a web app brings your business logic to where your users already are – the browser. We build tailor-made solutions instead of website-builder compromises.
Reach without installation: one link is enough – no downloads, no store reviews, no hurdles when onboarding customers and employees.
One stack for all devices: desktop, tablet and smartphone use the same application – built responsively and, as a progressive web app, even offline-capable on request.
Always up to date: we deploy new features and fixes centrally – every user works with the latest version immediately, no forced updates.
Proven in production: from readfy to first-party data strategies to MagicAds – many of our web platforms serve thousands of users every day.
Our web app services
From concept to operation: we cover the complete lifecycle of your web app – or strengthen your existing team with our expertise.
Custom web app development
Portals & dashboards
Progressive web apps (PWA)
API & backend integration
UI/UX & responsive design
Hosting, operations & evolution
The advantages of a web app
Web apps combine the reach of the web with the comfort of real software. These four advantages win our clients over every time:
01
No installation, instant reach
One link is enough: users start right in the browser, without a download and without store hurdles. That lowers the entry barrier and speeds up onboarding – for customers and employees alike.
02
One product for all devices
Desktop, tablet or smartphone: a responsive web app runs everywhere without separate native development. That saves budget and keeps maintenance effort low.
03
Always up to date through central updates
We deploy new features and security fixes centrally – every user works with the latest version immediately, with no forced updates and no version sprawl.
04
Scalable & secure
Modern cloud architectures grow with your user numbers. Encryption, role and permission concepts and GDPR-compliant hosting are standard with us.
Not sure whether a web app or a native app is the right solution for your project?
In a free initial consultation we assess your requirements together and recommend the approach that fits your goals.
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
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
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
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
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
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
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
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
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
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.
