About Cirrus

I built Cirrus because my son Charlie wanted to quit vaping and I couldn’t find him anything worth using.

Charlie is 23, funny as hell, and has been vaping since he was a teenager. When he decided he wanted to stop, we looked around for an app. There wasn’t much. The NHS has a stop smoking programme, but if you started vaping and never smoked, you’re not their priority. Charlie didn’t smoke. He just vaped. There was nothing for him.

So I built something.

I’m 50. I have no formal coding background. I taught myself through AI tools over the last couple of years, and I’ve shipped real production software running real operations. Nights, weekends, gaps between shifts. Cirrus was built the same way. Months of late nights, learning as I went, getting it wrong, trying again. My wife Aliye thinks I’m mad. She’s probably right.

But Charlie needed something. And if Charlie needed it, a lot of people in the UK needed it too.

Around 260,000 people in the UK started vaping and never smoked. The NHS doesn’t have a quit programme for them. We built the one they needed.

Puff is the AI coach inside Cirrus. Not a chatbot. Not a popup. A proper companion who knows where you are in your quit, tracks your streaks, helps you through cravings, and gives you a plan that fits you rather than a generic list of tips. If a craving hits at 2am, Puff is there. That matters more than it sounds when you’re three days in and every instinct is telling you to reach for your vape.

Built by Mark Chapman and a small team of AI collaborators. The AI-assisted development isn’t something we hide — it’s part of why a 50-year-old was able to build something this solid. Tools have changed. What matters is whether the thing works.