Honestly, I've tried a bunch of these extensions over the years and most are basically garbage or just break after every Amazon update. In my experience, share a cart is the only one that actually holds up when you have three people trying to coordinate a move. It is free. Does exactly what you need without a bunch of extra bloat. The mobile thing isnt really a dealbreaker if you just use the browser version on your phone rather than relying on a dedicated app. My tip? Just make sure everyone is actually logged into their own accounts before clicking the link or things get messy with the shipping addresses. Add to Cart is way too simple for a big move like this... you're gonna want the reliability of the bigger tool so you dont lose your whole list five minutes before checking out.

> Share-A-Cart looks legit but I heard it can be buggy with the mobile app Building on the earlier suggestion, Share-A-Cart is the most reliable option for security reasons. It uses code generation so you dont have to share login credentials. That is a huge plus for privacy. If extensions seem too buggy tho, the native Amazon Collaborative Lists tool is actually a decent free alternative. It works natively on the mobile app without losing items.