Not screenshots — the real thing, rebuilt from the same design tokens the apps use. Swipe a deck, check off a shopping run, watch the grid fill. It all runs in your browser with no scripts and no cookies, so nothing you tap here ever leaves the page.
The views above are built from the same colour, type, radius, spacing and motion tokens as the iOS and Android apps — the Sift Grid geometry, the 2px-stroke icon set and the swipe colours are shared definitions, not lookalikes.