One score. One formula. Every vendor.
RUO Score is a 1 to 5 score built from published reviews. The math is public and identical for every vendor, whatever plan they're on.
The four rules
Newer reviews count more
A review's weight halves every 365 days, so the score follows how a vendor treats buyers now, not years ago.
Small samples are pulled toward the middle
Before averaging, we add 5 reviews' worth of weight at 3.5 stars. A handful of perfect reviews can't outrank hundreds of strong ones.
Every published review counts the same
Both labels carry equal weight. The label tells you how the order was proven, not how much it counts.
No score below 5 reviews
Until a vendor has 5 published reviews, the profile shows the reviews without a score. A score from two reviews would say more about luck than the vendor.
Try it
Move the sliders to see how review count and average stars become a RUO Score.
Assumes every review is recent. Older reviews would count for less.
The formula
Rounded to one decimal. Recalculated every time a review is published or removed.
What never affects it
- Which plan the vendor is on
- Vendor replies
- Helpful votes
- Removed reviews, which drop out entirely
Star colors fade lighter for lower ratings so you can read a score at a glance. See how verification works for where reviews come from.