About
An IQ test that admits what it doesn't know
Brain Rate exists because the honest version of an online cognitive test was missing. Most sites hand you a confident three-digit number after a handful of questions. That number is not measurement, it's marketing.
What we set out to build
A test that uses item formats from published cognitive-ability research, scores them with a documented model, and reports the result the way a psychometrician would: as an interval, with the margin of error stated out loud. If the test doesn't know something precisely, it says so rather than rounding uncertainty away.
Why the range matters
A range is more useful, not less. It tells you where your ability plausibly sits and how confident the test is. It also stops you over-reading small differences between attempts — if two ranges overlap, nothing meaningful has changed. The detail is on the accuracy page and the methodology page.
How we make money
The short test is free and always will be, with no email required to see your score. The longer adaptive assessment is a single payment — no subscription, no upsell drip, no selling of personal data. That's the whole business model.
Principles
What we hold to
An honest range instead of a made-up number
Research-based item types
A methodology you can actually read
An adaptive full assessment
Clear about what it is not
Try it yourself
The free short test takes about 8 minutes and your result appears the moment you finish.
No card required. No email needed to see your first score.