Proper Useful builds smart digital tools that turn messy calculations and tough decisions into clear, actionable answers.
We are a tech company with a relentless focus on optimisation and improvement. We believe that complex decisions and messy calculations shouldn't hold people back. By building targeted, smart digital tools—like our venue and income calculators—we aim to cut through the noise, simplify the complex, and give you clear, actionable answers instantly.
We specialise in building practical web tools and calculators that simplify complex decisions.
We build powerful, easy-to-use calculators that distil complicated formulas into simple inputs and clear outputs.
We create targeted digital tools designed to eliminate bottlenecks, reduce friction, and improve everyday decision-making.
Our focus is on refining processes. We take messy, time-consuming tasks and transform them into streamlined digital solutions.
Real tools solving real problems — used by thousands of people to make better decisions.
Compare venues side-by-side, factor in all the hidden costs, and find the perfect wedding venue that fits your budget and guest list.
Book a Demo →Estimate your potential rental income, running costs, and ROI for holiday let properties. Make confident investment decisions with real numbers.
Book a Demo →A straightforward approach to building tools that deliver real value.
We dig into the problem space and understand what people actually need — not what they think they need.
We sketch out the simplest possible solution and validate it with real users before writing code.
Fast, lean development with constant feedback loops. We ship early and iterate quickly.
We measure, learn, and refine. Every tool gets better over time based on real usage data.
Whether you need a custom calculator, a web tool, or just a chat about an idea — we'd love to hear from you.