Users leave their health data only where they see care being taken.
A digital health app has to be as easy to use as an everyday app and as steady as a medical facility. Sinh Vũ helps the brand, interface and messages do both, and say plainly how users' data is treated.
Three things: an interface clear enough for people wary of technology to still use it, an easy-to-understand way of talking about personal data, and a brand steady enough that medical facilities dare to partner. Those three decide whether users sign up and come back.
Type large enough, few steps, the main button clearly prominent, usable even by older adults.
Say plainly which data is asked for, why, and who can see it, right where it is asked.
Not looking like an entertainment app, so partner medical facilities and users alike feel at ease.
All are digital health, but users come at different moments and worry about different things, so the interface has to say different things.
Their customersPeople who want to choose a doctor, a time and a place without calling or queuing.
Brand challengeBook in a few steps, clearly see that the facility is real and what its license is, and know what to prepare.
Their customersPeople who are far away, busy or in need of a quick question, talking to a doctor through a screen.
Brand challengeLet users trust that the person on the other side of the screen is a real doctor and that the conversation is kept private.
Their customersPeople tracking a chronic condition or caring for family, logging readings and medicine reminders every day.
Brand challengeBe usable every day without being a nuisance, and talk about health numbers without causing alarm.
These are the places where a health app loses users and features can't save it.
On first opening the app, a string of permission prompts appears, and users tap deny and leave.
Ask for each permission at the moment it is needed, with one sentence saying why and what the data will be used for.
Start from this problemBright colors, lots of animation, a playful tone; partner medical facilities hesitate to attach their name.
A calm design system: soft color, clear type, restrained motion, a voice that is warm but doesn't joke.
Start from this problemA message shows the visit's details on the lock screen, or is so cold that users ignore it.
Message and notification templates that are enough to recall the appointment without stating any detail of the condition, in a caring voice.
Start from this problemClinics, hospitals or pharmacies judge the platform by its introductory materials and find them lacking in depth.
A partner kit: how the platform operates, who is responsible for what, where data goes, presented with steadiness.
Start from this problemAt the booking stage, on the very first open. Users have to register and leave a phone number and personal information. If they see no reason to trust, they leave.
Touchpoints are the places where users see, touch or read about the platform. You don't need to do everything at once. These five decide whether users get through registration.
Where the most users are lost, and also where the brand gets to speak first.
Where users decide, and the doctor, facility, time and preparation need to be clear.
The part that appears most in users' daily lives, and where information is most easily exposed.
New users and medical partners alike come here to check whether the platform can be trusted.
Decide whether a medical facility agrees to attach its name and put its appointment schedule on the platform.
Listed in the order to do them. A new product can stop at step two or three to launch a first version; a platform that already has users goes all the way.
Name, mark, color and type: the foundation for the app, the website and the documents.
How to talk to users about data, notifications and reminders.
A set of shared interface components for the app and the website, which the engineering team can build on.
A landing page for new users and medical partners.
A platform profile for partner clinics, hospitals and pharmacies.
Sinh Vũ has not published a digital health app project. The two projects below solve the two nearest problems: an app interface for a product users must trust right away, and a full digital system for a medical group.
The first identity for iCheck, the barcode-scanning app that opened product origin tracing in Vietnam, turning a cold scan into a nod of consumer trust.
An identity system, app interface and handbook for a digital product where trust is the condition for users to scan the first time.
MEDI Plus is a new kind of medical complex, where patients are cared for gently from the very first moment. Sinh Vũ built the face and the digital nervous system for the clinic…
The full digital system of a medical group, so that attentive care in person carries over when users open the screen.
The principles behind it
Calmer: soft color, large clear type, few effects, a voice that is warm but doesn't joke. Users are worried about their health, so the interface needs to help them finish the task, not add pressure.
Say it plainly where you ask: which data, what for, who can see it. Ask for each item when it is needed instead of all at once at the start. Design only helps users understand; actually protecting the data is up to the platform's engineering and legal teams.
At a minimum: registration, choosing a doctor, booking a time, the call room, and receiving results or instructions back. Sinh Vũ arranges each screen by what the user is doing, not by the system's features.
Enough to recall the time and place, with no detail of the condition because the message may show on the lock screen. A caring voice, with a simple button to reschedule.
The logo and colors are the foundation. A design system also includes interface components, rules for type and spacing, and how errors are reported, so the engineering team can build new screens that still sound right. A version with medical partners usually needs this system.
A few lines about the platform, its users and what is holding you back is enough. Sinh Vũ will read it and reply within one working day.