Add from the product page
Browsing a supported store? A button on each product page drops the item straight onto the shared list — no copy-pasting.
Join with one link
Whoever creates the list sends an invite link. Paste it once and you are in — no server address to type, no account to create.
Shop and tick off
The shopper opens the popup, jumps to each pending item, adds it to the cart, and marks it actioned so everyone sees progress.