— Comparison
Core Brain vs Free Online IQ Tests
Most "free IQ tests" online (free-iqtest.net, iq-test.net, etc.) are clickbait quizzes that hand out inflated scores to drive sharing. Here's the difference.
| FreeIQTest.com | Core Brain | |
|---|---|---|
| Format | Short quizzes (5-15 minutes), no published methodology, scores tend to be inflated by 15-30 points to encourage sharing | 20-minute calibrated test, IRT 3PL Bayesian scoring methodology disclosed, returns 95% confidence interval (real psychometric tests always include uncertainty) |
| Methodology | Undisclosed / proprietary | IRT 3PL Bayesian MAP |
| Confidence interval | No | Yes (95% CI) |
| Six-axis breakdown | No | Yes |
| Time | 15-30 min | 20 min |
| Cost | Free | $15 |
Verdict
The free quiz tests are entertainment. They tell you what you want to hear. Core Brain returns a normed score with measurement uncertainty — sometimes higher than you expected, often lower.
Try Core Brain
20 minutes, six cognitive axes, full normed IQ with 95% confidence interval. $15 unlock or take a promo code if you have one.
Which should you take?
Take FreeIQTest.com if:
- You want a short entertainment-grade quiz
- You're not concerned with measurement accuracy
Take Core Brain if:
- You want a calibrated 20-minute test with real IRT scoring
- You want to see WHICH cognitive axis you're strongest in, not just a single number
- You want a 95% confidence interval on your score (the mark of a real psychometric test)
- You want a downloadable certificate