Blog

I have been living with optic neuritis since early January. Colour blindness is one of the symptoms. I built Pure Colour Test to monitor my colour vision over time. Here is why, and how it works.

The API that powers ScotTravel is moving to a new supplier on 30 April 2026. The free data allowance that has existed for over a decade is being cut to 30 requests per day. Here is what we know and what happens next.

Taking a closer look at our accessible tribute to the classic 60s Magic Robot toy. Learn how we combined childhood nostalgia with modern privacy protocols.

Why we refuse to put our tools behind an App Store wall. Discover the friction of native apps and why the web browser is the only operating system you need.

Send text or files between any two devices with no apps, no downloads, and no accounts. Data travels directly between your devices and never touches our server.

Building tools in a quiet corner of the internet can feel like working in a vacuum. Today marks a special milestone for Pure Contrast Tools as we celebrate our very first piece of community feedback.

People were opening our games and letting the zen music play without really playing. So we built Pure Zen Music: a standalone relaxation player. Five tracks, over an hour each, five hours of free relaxation music. Shuffle, custom playlist, no ads, no signup.

ScotTravel came about after Stephanie filled her phone memory with hundreds of photos of the tiny, high-up departure board at our local bus stop. She was zooming in to try and see when the bus was due. We built something better. High-contrast, privacy-focused bus information for Scotland. We are super pleased with it.

Zen Path was one of the first webapps we built. It is a game, but not a competitive one. You pulse a ball around a simple maze to the exit while relaxing zen music plays. It is not hard, and it is not meant to be.

Pure Contrast Tools is an altruistic project. We do not gain from it, but a lot of effort has gone into it. We want to reach a wide audience and see them benefit. Marketing is not our strong point. If you can help spread the word, or have ideas, we would love to hear from you.

Pure Chance started at the dining room table. We love Monopoly and Trivial Pursuit. Then we realised multiple dice would help Dungeons & Dragons players too. An accessible dice roller for board games and tabletop RPGs.

Outlook: Easy Weather was born from a conversation with a privacy-conscious low vision user who was horrified by how much their weather app tracked them. No GPS. No cookies. No tracking. Just weather.

Pure Contrast Tools is not the most attractive site. That is the choice we made. When we design a page, accessibility and privacy come first. How pretty it is comes last.

Our tools and games are not totally original. They are adaptations. The value we add is in making them accessible and private so people who are excluded by the mainstream can use them.

Free apps are rarely free. You pay with your attention and your data. Why Pure Contrast Tools does not monetise its users, and why you deserve tools that do not treat you as the product.

AI raises real concerns about privacy, the environment, and intellectual property. Those concerns are valid. Here is how we use AI responsibly on this site, and why society must choose tools that serve us.

We do not rely on automated checks alone. Here is how we test with real screen readers so the experience works for people who use them every day.

Many accessibility tools ask you to trade privacy for help. We believe you should not have to choose. Why Pure Contrast Tools insists on both clarity and no ad tracking.

The story of how Pure Contrast Tools began at a dining room table, not a boardroom. A personal journey from frustration to creation, building accessible tools for someone I love.