Darius Moldoveanu | Blog https://dariuspersonalfolder.co.uk/blog/ Notes on building products, killing ideas early, and shipping as a solo founder. en-gb Why my calorie tracker won't give you a number https://dariuspersonalfolder.co.uk/blog/honest-calorie-ranges.html honest-calorie-ranges Tue, 29 Sep 2026 09:00:00 +0000 Range Every tracker pretends "a handful of chicken" is exactly 184 kcal. Range shows a low/high estimate instead, and that uncertainty turned out to be the product. Killing Zflow: when the market is right and the maths isn't https://dariuspersonalfolder.co.uk/blog/killing-zflow.html killing-zflow Tue, 15 Sep 2026 09:00:00 +0000 Zflow A real gap in e-bike range and a prototype that worked on paper. Then the physics. Why shutting down your own project early is a skill worth practising.