redplumm

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Plain answers to the questions people ask us before they buy: what custom software actually costs, when you should not build it, and how our retainer works.

Off-the-shelf or build your own? An honest way to decide

26 September 2026 · 3 minute read

A practical test for whether your business should buy software or have it built, from a company that will talk you out of building.

How an unlimited development retainer actually works

26 September 2026 · 4 minute read

What unlimited development on a monthly retainer means in practice, where the fair use line sits, and why it beats paying per change.

What does custom software actually cost a small business?

26 September 2026 · 4 minute read

Real numbers for bespoke business software in the UK, why quotes vary so wildly, and the three things that move the price more than anything else.