Chuff

Got a box of train track and a patch of floor? Chuff works out what you can actually build with it. Tell it what pieces you own and how much space you've got, and it finds every layout that joins up and fits — plain loops, sidings you can drive or reverse into, two-way passing loops, and turnaround loops — built only from track you really have, not some idealised set. Works with chunky first blocks for toddlers, classic wooden track, clip-together plastic track, or any other system — just measure a few pieces once and Chuff remembers the shape of it. Once you've picked a layout: • A step-by-step build guide walks you through it piece by piece, with a live diagram of what's been laid and what's next • A full-screen mode hands the whole display over to following along on the floor, and keeps the screen awake while you build • A "run the train" preview animates the finished circuit before you've laid a single rail • Keep your favourite layouts so you can build them again later No ads, no accounts, and nothing about your track collection or your floor plan ever leaves your device. If you'd like to say thanks, there's an optional one-time tip — the app is fully functional without it.

Initial release