A platform wins when buyers and sellers alike feel it is their home.
A marketplace or platform has to win over two sides at once, and every new feature adds another screen. Sinh Vũ builds a shared face and a digital design system so every screen reads as one product.
Three things: one shared face for buyers and sellers, a digital design system so new screens follow it, and a clear voice when something goes wrong. A platform is trusted when it still speaks clearly and consistently in a crisis.
Name, color and type used for both the buyer's app and the seller's page, differing only in layout.
Buttons, tables and notifications in one shared set, so every team building a new screen ends up with the same product.
Wording for a late order, a refund or a cancellation says plainly what happened, who does what and when it will be done.
All of them are commerce platforms, but which side most needs convincing differs.
Their customersBuyers look for every kind of goods in one place; sellers of many sizes open storefronts side by side.
Brand challengeKeep the buying experience consistent even though every storefront is different, and give sellers an operating space that is easy to use.
Their customersUsers order food or goods for fast delivery; partner stores receive orders; couriers take the jobs.
Brand challengeThree parties look at one order: each needs a screen for its own job while still speaking one language.
Their customersGrocery owners restock and manage sales through an app; suppliers sell to many small points of sale.
Brand challengeAn interface simple enough for people not used to technology and trustworthy enough for them to hand restocking over to the platform.
These are the places where a commerce platform loses users even when features are not lacking.
The buyer's app is beautiful while the seller's page is messy and entirely different, as if it belonged to another product.
One shared language for both sides, differing only in information density: buyers need suggestions, sellers need fast actions.
Start from this problemNew orders, late orders and promotions share one voice and one look, so the urgent thing gets lost.
A hierarchy for notifications: urgent, worth knowing, general news, each with its own voice and shape.
Start from this problemEach big festival of the year brings a new look, and users remember the platform only for its promotions.
A fixed campaign frame with parts that change by season, so every season is recognizably the platform's.
Start from this problemA late order, a refund, a cancellation: users see only a status code and don't know the next step.
Write those moments in advance in clear, warm language that says who does what and when it will be done.
Start from this problemAt the Buy stage. From payment to delivery, users have only the screen and messages to trust, so wherever things are vague is where they leave.
Touchpoints are the places where buyers and sellers see, tap or read on the platform. These five decide whether they treat it as their own home.
Where everything starts and ends, so the first screen and the cart decide the feeling.
Where sellers spend the whole day, so it must be clear and fast.
The platform's voice outside the screen.
When the most new people see the platform.
Where users go when they are worried, and remember for a long time if treated well.
Listed in the order to do them. A platform that already has a face goes straight to step three.
Settle whom the platform serves first and what it promises each side.
Name, mark, color and type shared by both sides.
A digital design system: components and principles for every team building new screens.
A campaign visual frame for the festivals.
Sinh Vũ has not published a marketplace project. The two below are the closest because both connect users to a service through a screen.
Hàng Xóm Tốt is a central kitchen cooking family meals for residents of premium apartment complexes, in the spirit of a good neighbour who cooks well and brings a plate over…
An ordering app built as an invitation rather than a checkout counter, with every tap in the same friendly voice: a lesson for the wording on every screen of a platform.
2025kythuat.work handles repairs, installation, cleaning and refresh work for apartment residents. Sinh Vu built its identity, website, paperwork and field operating system…
Easing residents' fear of vagueness when calling a technician, through clarity across the identity, the website, the paperwork set and the on-site operating system.
The principles behind it
It starts with settling whom the platform serves first and what it promises each side. Only then come the name, the mark and the digital design system.
The identity set says what the brand looks like. A digital design system is the set of buttons, tables, notifications and principles that lets many teams build screens and still end up with one product.
It doesn't need its own identity. It needs the same language as the buyer's app with a layout leaning toward fast actions, because sellers use it all day.
Build a fixed frame of layout, color and type, then change only the images and the message each season. Every season looks different but is recognizably the same platform.
A few lines about the platform, its two sides of users and what is holding you back is enough. Sinh Vũ reads and replies within one working day.