See every
change.
Before you
update.
Compare two or three Shopify theme versions at once. Know exactly what's yours, what's new, and where they collide, before you touch a live store.
Read-only, always. No merge, no auto-publish. You decide what to keep.
Three steps. No git required.
Every theme in the store is available. No zip uploads, no snapshots, no history to manage. Every comparison runs live, on demand.
Pick your themes
Choose two themes, or three if you want your edits told apart from the update.
Read the file list
Each file gets one clear status and a colour that means only that. Conflicts come first.
Open a file and decide
Side-by-side view highlights exactly what differs, so you can copy what you want into the theme editor.
Every file gets exactly one status. A colour never means two different things.
One payment. Not another subscription.
Two-way comparison and the full 3-way file list are free, always. Only the 3-way line-by-line detail is a one-time unlock.
One time unlock
$19.99
Prefer not to do it yourself?
Our Theme Update Service ports your customizations into the new theme version for you, starting at $299.
Theme Drift: Compare & Diff