There is no single "best" online IQ test — there's a best free estimate (123test), a most rigorous one-time measurement (RIOT), and full subscription suites (ours included). What matters is knowing which you're buying and what the renewal terms are before a card comes out. We checked every site below on August 20, 2026 and report only what their own pages state.
Disclosure: this comparison is published by IQ Revealed, one of the products listed. We include ourselves, state our terms identically to everyone else's, and link every competitor so you can verify.
One rule applies to all of them: an online score is an estimate for self-insight — see how accurate IQ tests really are — and no website substitutes for a psychologist-administered test.
IQ Revealed (this site)
Subscription: $1 / 7-day trial, then $29.99 every 28 days. Best for: A full testing-and-training suite with transparent subscription terms.
- 40-question matrix-reasoning test, ~15 minutes; score, percentile, certificate and country ranking
- Personality, career and relationship tests plus adaptive brain training in the same membership
- Scoring methodology published; renewal terms printed on the pricing page; two-click cancellation; published refund policy
123test.com
Free (short test); paid one-time tests $12.99. Best for: A genuinely free quick estimate with zero commitment.
- Free test: 10 questions with a 10-minute timer, instant estimate, no registration
- Paid one-time options: Culture Fair Intelligence Test (25 questions) and Classical Intelligence Test (44 questions), $12.99 each
RIOT (riotiq.com)
One-time purchase: $25 basic / $50 full. Best for: The most rigorous single measurement without a subscription.
- Developed by Dr. Russell T. Warne (educational psychologist)
- Full test: 15 subtests, 6 cognitive indices, ~52 minutes, stated margin ±3.7 IQ; basic: 5 subtests, ~13 minutes, ±5.6
- Free try-out offered; no subscription
CogniFit (cognifit.com)
Free IQ test; broader training platform is freemium. Best for: A free, science-flavored test if you don't mind registering.
- IQbe: ~10-minute nonverbal fluid-intelligence test, described as scientifically validated
- Requires creating an account (no card needed for the test)
iqtest.net
Free test; paid certificate offered after. Best for: A no-friction free run-through.
- Free with results shown immediately on completion
- Optional paid electronic certificate (price shown at the end)
brght.org
Paid, from $19.95. Best for: Benchmark-heavy reporting and repeat testing.
- Adaptive test (IRT-based) that adjusts question difficulty to your answers
- Detailed report with peer, job and university benchmarking; unlimited retakes on paid plans
brainmanager.io
Small fee (~$1) starting a 7-day trial that converts to a subscription. Best for: A quick certificated result — if you note the trial terms first.
- 20-question test, ~10 minutes, PDF report and certificate
- The entry fee starts a trial that becomes a recurring subscription; the post-trial price wasn't displayed on the site when we checked — find it before paying
myiq.com
Subscription: $1 / 7-day trial, then $29.99 every 28 days. Best for: A polished funnel with a large review base — read the renewal terms first.
- 40-question test (~15 minutes) with cognitive profile; courses, puzzles and a 92-question personality test included
- 4.1 on Trustpilot across 136,000+ reviews; dominant complaint theme is unexpected recurring charges; refunds discretionary per terms
How to choose in 30 seconds
- Just curious? Take a free one (123test, iqtest.net, CogniFit).
- Want one rigorous number, no strings? RIOT's one-time tests.
- Want testing plus training over time? A subscription suite — then judge on transparency: renewal terms visible before checkout, published methodology, easy cancellation. That standard is why we publish ours, and it's the standard you should hold everyone to, including us. See also: IQ Revealed vs myiq.com and is myiq.com legit?