What it is

The explanation

A website shows information. A web app is software you use in a browser: you log in, enter data, and the system does something with it. A planner, a quote calculator, a customer portal, a stock system — those are web apps.

Technically the line is blurrier than it sounds, but for a client it is practical: with a website the question is what should be on it, with a web app the question is what should happen.

Why it might matter to you

4 points
  • The cost difference is an order of magnitude, not a percentage. A web app has users, roles, data that has to stay correct and errors that cost money.
  • A web app works on any phone and computer without installation, which makes it more practical than a real app for most businesses.
  • It is maintenance, not a handover. Software people use daily changes along with their work.
  • The biggest mistake is building before the process is clear — software sets a process in concrete rather than tidying it.

How we handle it

In practice

Most web apps we build replace a spreadsheet too much depends on. So it does not start with design but with reading that spreadsheet: the formulas in it are years of accumulated knowledge about how the business calculates, written down nowhere else.

Related terms

3 pages

API

An API is how two systems talk to each other. Why that decides whether your packages will ever work together.

Read more →

Integration

An integration lets two systems exchange data without retyping. What it saves and what breaks when one side changes.

Read more →

Static website

A static site is built in advance instead of assembled per visitor. That makes it faster, safer and cheaper to host.

Read more →
Next step

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