MatterCart

MatterCart is a mobile + web AI-assisted shopping companion that prevents smart-home regret. Users scan or paste product links (lights, locks, hubs, sensors), and the app builds a compatibility graph across Matter, Thread, Zigbee, Z-Wave, Wi‑Fi, and major ecosystems (Apple Home, Google Home, Alexa, SmartThings, Home Assistant). It flags hidden gotchas: required hubs, region locks, missing Thread border routers, subscription paywalls, and “works with” marketing that doesn’t mean local control. It then recommends a minimal, interoperable cart with cheaper equivalents and a step-by-step setup plan. Revenue comes from affiliate links plus a paid tier for advanced checks (local-only preference, privacy scoring, and multi-home inventories). This is not a universal controller; it’s a brutally practical pre-purchase compatibility and cost-of-ownership validator.