Designed and built by [D4U]
nada
A red button that does nothing, the stats of your nothing and a real challenge: put the phone face down for a while. For iPhone and Android.
Designed and built by [D4U]
More than a thousand signs in seven packages, from road signs to Morse code, with cards, training and challenges. Works offline, in six languages.
Designed and built by [D4U]
A system for the whole restaurant: the menu on the guest's phone, orders from the dining room to the kitchen, the register and delivery, with an app for each person and no commission on orders.
Designed and built by [D4U]
KwotTalk
Small service businesses describe a job out loud and get a professional PDF quote, recognized on the phone itself. No account, no subscription.
The D4U Store
Apps for iPhone and Android, web apps and platforms, and everything around them: brand, content, stores and support. Everything here, we made. The next one can be yours.
More apps
Every app has its own page, and from there its own website when it has one.
understand first
Web app
Tools, challenges and tutorials to understand technology before you use it, starting with Linux.
In developmentSee what's coming
UnplugFirst
Mobile app · iPhone and Android
A calm reminder that your phone is still plugged in when you pick it up at night.
In developmentSee what's coming
Your app could be next.
We design and build new products all the time. Tell us about yours.
Start a project
How we work
Five steps with the same people from start to finish. You see the product early and often, so there are no surprises at the end.
Your business, the people who will use it and what it has to achieve.
A clear scope
Name, brand and screens you can try before a line of code.
A prototype to try
Apps and platform, tested on real phones as we go.
Builds to try
Stores, website, privacy and support, ready on day one.
Live in the stores
Updates, new features and support, with the same team.
Updates and support
What we do
The same capabilities that built these products are available for yours. One team for every part, so nothing gets lost between them.
Name, identity, icon, mascot, voice and every screen, designed together so the product feels like one thing.
Seen in
DishDuck
Signopedia
Built for each platform, in Swift and Kotlin, fast and at home on every phone. Light and dark, large text, offline.
Web apps that run in any browser, and platforms with a portal for the business and apps for its customers and staff.
Seen inDishDuckunderstand first
Speech recognized on the phone itself, turned into structured data. Private by design, and it keeps working offline.
Seen in
KwotTalk
English and Spanish from day one, and more when the product needs them, with content that reads as if it were written there.
Seen inSignopediaunderstand first
App Store and Google Play listings, privacy policies, support pages and the updates that come after launch.
Seen inSignopediaKwotTalk
Your project
Have an idea that needs an app, or a business that needs a platform? Tell us about it and we will tell you how we would build it.
An app or platform like the ones here, designed and built for your idea.
d4u.workBusiness software, integrations and data on our own enterprise framework.
Tell us what you want to build, who will use it and when you need it. We reply with a first idea of how we would do it.
Nada