BettaScore
How BettaScore works
BettaScore ranks products by what public reviews, videos and discussions say about them. Here is exactly how a mention in a review becomes points, and how points become a ranking.
Collect public reviews
Written expert reviews, YouTube reviews and Reddit discussions about each product.
File each mention under a topic
AI marks what a source says about a topic, such as milk steaming, as positive or negative.
Turn mentions into points
- A YouTube review that is positive about a topic adds 5 points to it; a negative one takes 5 away.
- A written review or a Reddit discussion adds or takes away 1 point.
- Each source counts once per topic, however often it mentions that topic.
- A source that is both positive and negative about the same topic counts 0 for it.
Add votes, then rank
Signed-in visitors can vote on each topic of a product, and each net vote adds or takes away 0.1 point. Products are ranked by Ranking Net Score within their category; ties go to the one with more sources.
Example: one espresso machine
A made-up machine with four sources and some votes.
| Source | Topic | Says | Points |
|---|---|---|---|
| YouTube review | Milk & Steam | Positive | +5 |
| Reddit discussion | Milk & Steam | Negative | −1 |
| Expert review | Grinding & Dosing | Positive | +1 |
| Same expert review | Build Quality & Durability | Negative | −1 |
| Points from reviews and discussions | +4 | ||
| Visitor votes | Milk & Steam | 12 up, 3 down | +0.9 |
| Ranking Net Score | +4.9 | ||
Where the evidence comes from
For every product we collect three kinds of public sources: written expert reviews, YouTube reviews and Reddit discussions. We don't test products ourselves.
Some YouTube reviews are sponsored by the brand. They count like any other source, and the link next to every quote lets you see who said it.
How a ranking is ordered
Ranking Net Score is the points from reviews and discussions plus the points from votes. Products are compared only with others in the same category; there is no score across categories. Ties go to the product with more sources. Products without scored evidence stay on the list, marked Unranked.
You can set a budget, filter by features or sort by a single topic. Filters and sorting never change a product's points.
What we leave out
When the same product is listed twice, we keep the listing with more sources and remove the other. Sources that turn out to be about a different model are removed when we catch them.
How often rankings change
Rankings are rebuilt when a new batch of reviews and products arrives, and the date at the top of each ranking shows the last rebuild. Votes count in between.
What BettaScore is not
No brand pays to be listed or to rank higher. The Amazon and Google Shopping links on product pages are plain search links; we don't earn anything from them.
AI can misfile a mention. That's why every quote links to its source: you can always check it.
Found a mistake?
Use the Feedback button at the top of any page, or email legal@bettascore.ai. Tell us the product and the quote, and we'll fix it. More about us on the About page.