since August 2025
The App for your Everyday Life with Duchenne
With One4, you can easily keep track of your health and treatment. Share your experiences and connect with others who are facing similar challenges.
GDPR
compliant
multi-user account
100%
data control
With the community, for the community
From the very beginning, the everyday needs of patients and their families have been at the heart of One4.
Their experiences — along with the expertise of medical professionals — have played a key role in shaping the app.
And we’re not done yet — your perspective matters! Got feedback or ideas?
We’d love for you to help shape the future of One4.
How the app supports you
These are the app’s key features at a glance. And there’s more to come: New features are already in the works — including future integration with clinical centers for truly connected digital care.
Connect with others
In the community section, you can share your experiences, ask questions, or connect with others via the message board or chat — with people who truly understand what you're going through. You might even find someone living nearby!
Track symptoms & health
Keep track of how you're doing: document symptoms, observe changes, and use the insights to make better health decisions.
Practical: Soon you will be able to share relevant developments directly with your clinic via the app!
Keep track of your medications
Whether you take them regularly or only as needed — log your medications in the app and keep everything in view. Helpful reminders make sure you never miss a dose.
Use the app together
You can create up to five profiles. For example, one for the patient, one for mom, and one for dad. This way, everyone can use the community area individually.
Discover news about Duchenne
In the news feed, you'll find the latest articles about Duchenne – from new study results to exciting events, webinars, and everyday tips. Stay informed without having to search for long.
coming soon
Share health data with your clinic
Soon you’ll be able to share your data — like the progression of relevant symptoms — directly with your clinic. Questionnaires will be sent to you through the app, so you can fill them out before your appointment. Your data remains under your control at all times.
coming soon
Participate in studies
Soon, the app will show you an overview of studies that match your profile. You can take part either online or in person. Your data stays safe and fully under your control — protected by blockchain technology.
Your data belongs to you. Period.
When you use One4, you might share personal information about yourself and your health. That’s why it’s important to us that you always know what happens with your data — and that you stay in full control at all times.
100% protection
Your health data is protected in compliance with GDPR and encrypted end-to-end. What's special about it: Only you have access, via your personal security key, which is automatically generated for you in the app. No one else can view your data – not even us as the operator.
100% control
Whether it’s for your care team or for medical research — you decide if and what data you want to share. Your data remains encrypted at all times.
Sharing happens securely and automatically through blockchain technology. This ensures that every use is clearly regulated, fully documented, and always transparent for you.
"I contributed my experience from daily practice to design the app in a way that closely reflects the real needs of families and the requirements of clinical care."
Dr. med. Andreas Ziegler
Neuropediatrician at Heidelberg University Hospital, GNP
Contact us
Digital Health Companion GmbH
Alte Leimengrube 14
68526 Ladenburg
