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Answer

How long does custom software take to build?

Realistic timelines for each stage, what slows projects down, and how to start saving time sooner.

Geoff BromilowAI systems developerUpdated 1 min read

The short answer

A first working version of custom business software usually takes 8–12 weeks. A clickable prototype takes 2–4 weeks, and a full system with several integrations takes 3–6 months. Building in stages means your team starts using it — and saving time — well before it’s finished.

At a glance

First version
8–12 weeks
Prototype
2–4 weeks
Full system
3–6 months
New features
Every 2 weeks

What happens at each stage?

  • Discovery, 1–2 weeks: we map your process and agree what to build first.
  • Prototype, 2–4 weeks: clickable screens you can try before any code is written.
  • First version, 6–8 weeks: the core features, live for your team.
  • Improve, ongoing: new features every two weeks, shaped by real use.

What slows a project down?

Most delays aren’t about code. They come from waiting and changing direction.

  • Waiting on feedback or sign-off
  • Systems without a good API
  • Priorities changing mid-sprint
  • Messy or missing data

How can we go faster?

Pick one painful process and solve it first. A focused first version ships sooner, and what you learn from it shapes everything after.

Got a process that eats your week?

Show us how it works today. We’ll suggest what to build first and how long it’ll take.

Start a conversation

Questions people ask

Often, yes. We usually start discovery within one to two weeks of saying yes.

Every two weeks in a short demo — and any time in Stack, our client portal.

That’s normal. Most clients keep a small monthly block of time for improvements.

Sources

  1. 01Swift Studios project data, 2024–2026 · Swift Studios
Geoff Bromilow
Written by
Geoff Bromilow
AI systems developer

Geoff builds the AI systems, automations and integrations behind our projects — and explains them without the jargon.

Last reviewed 24 Sept 2026LinkedIn ↗ (opens in a new tab)

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Ready to work smoother?

Tell us what’s slowing you down. We’ll come back within a day with a few ideas — no obligation.

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