The Kacbu Score is calculated from real user ratings, and opinion is shown with its breakdowns rather than reduced to a single number. This page explains what is calculated how — and what never enters the score.
Last updated: 26 August 2026
Every user rates a product from 1 to 5 stars. The Kacbu Score is the plain average of those ratings converted to a 100-point scale. Every review carries equal weight: big markets don't speak for smaller ones.
We publish no global average or satisfaction rate for a product until at least 5 reviews have accumulated. A country's own average is not shown until at least 3 reviews have come from that country — a single user never counts as 'what that country thinks'.
An average alone can mislead, so once there is enough data we also show the full 1–5 star distribution.
Reviews are grouped by country, and we separately compare how a product is rated at home — where it was designed or built — against the rest of the world.
Structured owner reports — time owned, 'would you buy it again', aspect-by-aspect pros and cons — are published as their own section once the sample is large enough.
The strengths-and-weaknesses lists, use-case guidance and the 'Should I buy it?' ruling are the editorial team's work, with their reasoning stated on the page. None of it affects the Kacbu Score; the score comes from user stars alone.
Short quotes from independent publications are given with their source and a link. Press scores are never averaged into the Kacbu Score; they stand as a separate signal.