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Single Page Application
Single Page Application

A product that stays in the browser

We build a product interface in one browser window. Screens change without a reload, and nothing has to be installed.

WHO IT IS FOR
Early stage

A product with no interface

The idea exists, but clients cannot use it: everything sits in spreadsheets and email, and a store release is too much for version one.

Growth stage

The site cannot hold daily work

People come back every day, and a multi-page site makes them hunt for the right screen and lose the place they left.

Scale stage

Edits break neighboring screens

Features have piled up, every change touches other parts of the interface, and the team keeps delaying updates.

WHAT IS INCLUDED
Version-one scenarios: actions the product cannot skip
Screen map: how a person moves inside one window
Figma prototype: walk the task before any code
Interface: React and TypeScript, no full page reload
Data: exchange with a Node.js and PostgreSQL server
Screen states: loading, empty, error and success
Handover: repository and a map for adding screens
PROCESS

From request to result

[ 01 ]free · 30 min

Clarity Session

We check if the product needs one browser window, not a website or a mobile app. You leave with the scope of version one. No sales pitch.

[ 02 ]14 working days

Prototype

Scenarios and a Figma layout you can walk through. You see the path before any code is written.

[ 03 ]scoped per project

Build

We build the interface in React and TypeScript and show the screens once the scenario can be completed.

[ 04 ]ongoing, monthly cycle

Launch

We open access, see where people stop, and improve those screens.

Frequently asked questions

and answers

Is a single-page app the same as a progressive web app?+

No. A single-page app is a product interface in one browser window, without page-to-page navigation. A progressive web app is installed on the phone and is meant to work on a weak connection. If you need installation and use without a stable network, that is a separate service.

Will it replace a mobile app?+

No. It opens in the browser and does not go through an app store. A mobile app is installed on the phone and uses the device. A single-page app fits when people work from a computer or do not want to install anything.

Can you connect our server?+

Yes. If your data is already available through an API, we connect the interface to it. If there is no server, the server side on Node.js and PostgreSQL is estimated separately, so it is not mixed into the screen work.

Do we keep the code?+

Yes. You get the repository and a short map of the screens. Your team can continue from there, or we can, under a separate agreement.

THE FINAL STEP TOWARD A SYSTEM

Ready to turn growth
into predictability?

Start with a free 30-minute Clarity Session.