About
About ConsFirst
ConsFirst is run by Tomoya Kawamoto, an independent reviewer based in Japan. The site is not owned by a retailer or a brand, and no brand pays to appear on it.
Why ConsFirst exists
Most buying guides lead with what is good about a product. But the thing that decides whether you'll be happy with it is often the downside: the app that keeps disconnecting, the filter that costs more than expected, the battery that fades after a year. ConsFirst puts those first, so you can decide whether you can live with them before you buy.
How products are compared
- Downsides first. Each product starts with its most common owner complaints, then the strengths. On category pages, the at-a-glance list shows each model’s biggest catch.
- Sources, not lab tests. We don't test products in a lab. We read what owners report in retailer reviews and community discussions, and what independent publications found when they tested products hands-on.
- Every claim links to its source. Each complaint, strength and score has a link to where it came from, so you can check it yourself. If we can't find evidence for something, we leave it out or say so instead of guessing.
- Same rules for every product. Rankings follow the published method on How we research, including how the Amazon 1–2 star share and missing evidence affect a model's rank.
Why there are no prices
Prices change daily, and a price copied onto a page goes out of date quickly. Instead we show a rough price tier ($, $$, $$$) based on typical list prices. Please check the retailer for the current price.
How we use AI
ConsFirst is made with the help of AI tools. They help collect and summarize owner reviews and expert test results, draft the text, and check the site for mistakes such as missing sources or broken links. AI can get things wrong, which is why every point on a product links to its source: you never have to take our word for it.
Some category pages have a scene image at the top. These images are AI-generated illustrations of where a product might be used, and they are labeled as such. They are not product photos and don't show any real product.
How the site makes money
ConsFirst is free to read. Some links are affiliate links: if you click one and buy something, we may earn a small commission at no extra cost to you. As an Amazon Associate we earn from qualifying purchases. Commissions never change what we report, and brands can't pay to be included, to be ranked higher, or to have a complaint removed. Details are on the affiliate disclosure page.
Keeping pages up to date
Products get updated, replaced and discontinued. Each category page shows the month it was last updated. When a newer model replaces an old one, or owners start reporting a new problem, we update the page. If you spot something that is wrong or out of date, please tell us — corrections are welcome.
Contact
Questions, corrections and other messages: see the contact page.