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Method · April 15, 2026

Turning an Excel File into an App: What 4 Weeks Actually Look Like

When we say "your app in four weeks, fixed price," we sometimes get a polite smile. That's fair, we've all seen projects drag on. So let's pull back the curtain.

Week 1: we scope

We sit down with you, we understand your process, we sketch the screens together. Above all, we lock the scope. This is the most important step: a clear scope guarantees the timeline and the price.

Week 2: we build the foundation

Database and first screens. By the end of the week, you see something real, not a diagram. We adjust quickly, while it's still easy to change.

Week 3: we add the intelligence

Business logic, automations, connections to your tools. The app goes from "pretty mockup" to "tool that does the work."

Week 4: we test with you, and we ship

Your users take the app for a spin, we gather their feedback, we adjust, we move to production. At the end, an app that runs, not a prototype.

What throws a short project off the rails (and how to avoid it)

Just one thing, almost always: scope that swells along the way. "While we're at it, we could also...". Each little addition seems harmless, but stacked together they blow up the timeline. Our method: we note these ideas in a "version 2" list, we celebrate them, and we ship the working version 1 first. Then we improve, on solid ground.

Pro tip. Identify in week 1 the two or three users who will test. Block their calendars for week 4 right away. The project almost never slips on the technical side, but often because the testers aren't available at the right moment. Anticipating that is how you protect the timeline.

Key takeaways

  • Four weeks: scoping, foundation, intelligence, testing and go-live.
  • The number-one risk is scope that swells. We park it in "version 2."
  • The fixed price commits both sides: locked price, guaranteed timeline.
  • Lock in the testers' availability from the start.

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