WhatMovedIt keeps a dated record of what changes in your store: theme edits to the exact line and publishes, product and price updates, collection, page and discount activity, app installs and marketing events. Each sits on a timeline next to your daily sales, with one per product and collection too. When a day looks off, see what changed around it. Every theme version is kept from install: reopen a past Black Friday theme and copy old code back yourself. Read-only: we never edit your store.