S-to-F tier lists for 208 product categories, built by consolidating independent research runs over expert reviews and owner reports. Every placement is cited, and every citation carries the outlet, a verbatim quote, who said it, and whether we fetched the link and confirmed it. Boards are graded both ways: the products the research says to avoid are published in the bottom tiers rather than dropped, so you get the half a buying guide leaves out. Products carry GTIN barcodes and, where the maker published one, an announcement date. No affiliate links and no sponsored placements: no brand can pay to move on a board.
How to use
- 1Add it in ChatGPT
Open stierproducts in ChatGPT's Plugin directory (button above), select + to add it and sign in if asked.
- 2Use it in a chat
Type @ in the composer and pick stierproducts, or start your message with its name. ChatGPT may also suggest it when it fits what you ask.
Things to ask
- “What are the best mirrorless cameras, and which ones should I avoid?”
- “I'm looking at a Ninja air fryer. Where does it rank, and what did reviewers actually say?”
- “Compare the top two robot vacuums and give me their barcodes so I can price them locally.”