Braindex

Discover Your True Cognitive Potential

Take scientifically-designed IQ tests and cognitive assessments. 100% free, no hidden fees. Get your full detailed report instantly.

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Everything You Get — 100% Free

No paywalls, no hidden fees. Take the test, get your full report instantly.

Your Exact IQ Score

Get a precise IQ score calculated from difficulty-weighted, time-bonused scoring mapped to a real distribution.

Speed vs Accuracy Analysis

Understand your cognitive processing style — are you a fast intuitive thinker or a deep analytical reasoner?

5 Cognitive Areas Ranked

See your performance across Matrix Reasoning, Pattern Recognition, Spatial, Number Sequences, and Logic.

Percentile Ranking

See exactly where you stand compared to the general population with a visual bell curve chart.

Personalized Training Plan

Get custom recommendations to improve your weak areas with specific exercises and daily routines.

Downloadable PDF Certificate

Get a shareable certificate of completion with your score, classification, and percentile ranking.

Our Assessments

Choose from our growing library of evidence-based cognitive and personality assessments.

Free

Intelligence Assessment

30 questions · ~15 min

Pattern recognition, logic, spatial reasoning, and number sequences

Start Free Test
Free

Personality Type (Big Five)

50 questions · ~8 min

Discover your OCEAN personality profile and how you relate to the world

Start Free Test

Attachment Style

40 questions · ~10 min

Understand your relationship patterns and emotional bonding style

Coming Soon

How It Works

Step 1

Take the Test

Answer 30 questions at your own pace — pattern recognition, logic, spatial reasoning

Step 2

Get Analyzed

Our algorithm scores your answers by difficulty, speed, and accuracy across 5 cognitive areas

Step 3

See Your Results

Get your exact IQ score, detailed report, cognitive breakdown, and training plan — all free

What Your Report Looks Like

Every test taker gets a detailed, multi-page cognitive report — for free.

Your Full Cognitive Report

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Superior

95th Percentile24/30 Correct12m 34s

Cognitive Profile

Matrix Reasoning92%
Pattern Recognition85%
Spatial Reasoning78%
Number Sequences88%
Logical Reasoning70%

Key Insights

Strongest: Matrix Reasoning — exceptional abstract thinking

Growth area: Logical Reasoning — room for improvement with practice

Speed: Fast thinker — 18s avg, suggesting strong intuitive processing

Training plan: Custom exercises based on your weak areas

Plus: bell curve chart, question-by-question breakdown, difficulty analysis, PDF certificate, and more

Get Your Free Report

Built Different. Built Honestly.

How we compare to other IQ test sites

Braindex
Others
100% free full report
No account required
Real psychological frameworks
Entertainment disclaimer
No dark patterns

What People Say

★★★★★ 4.8 average from 1,392 reviews

S

Sarah M. 28

★★★★★

Really well-designed test. The questions actually made me think, unlike those clickbait ones. And the report is super detailed!

M

Marcus T. 34

★★★★★

Finally an IQ test that doesn't try to sell you something at the end. Transparent and honest — exactly what they promise.

L

Lina K. 22

★★★★★

The cognitive breakdown was fascinating. I had no idea I was so strong in spatial reasoning. The training plan is actually useful.

D

David R. 41

★★★★★

The question-by-question analysis helped me understand where I lost time. Great for anyone who wants real insights.

A

Aisha P. 19

★★★★

Took this before a college entrance exam to practice my reasoning. The pattern questions are legit challenging.

T

Tom W. 55

★★★★★

Clean design, no ads, no tricks. Just a solid test with a solid report. Shared it with my whole family.

Frequently Asked Questions

Is this really 100% free?

Yes. The test, your exact IQ score, full detailed report, cognitive breakdown, training plan, and PDF certificate are all completely free. No credit card, no sign-up required.

How accurate is this IQ test?

Our test is based on Raven's Progressive Matrices methodology — the gold standard for measuring fluid intelligence. While no online test replaces a clinical evaluation, our scoring algorithm uses difficulty-weighted, time-bonused calculations mapped to a real IQ distribution.

How long does the test take?

About 15 minutes on average. There are 30 questions with no time limit per question, so you can work at your own pace.

What cognitive areas does it test?

The test measures 5 areas: Matrix Reasoning, Pattern Recognition, Spatial Reasoning, Number Sequences, and Logical Reasoning. Your report breaks down your performance in each.

Can I retake the test?

Yes, you can retake it as many times as you want. Each attempt gives you a fresh report.

Is my data stored or shared?

Your results are stored only in your browser's session storage. We don't collect personal data, require accounts, or share anything with third parties.

Ready to discover your potential?

No account required. No credit card. Takes ~15 minutes.