CognitiveMetricsReviews of cognitivemetrics.com

I love it, the site has excellent quality, trusted tests, very reliable and doesn't spam me with ads

Very good and the iq test core is a realy good test to help you know about your iq

The professional design

Really helps me build my IQ and improves my mental sharpness.

This is easily the best online IQ test I have taken. I would highly recommend taking it if you are interested. My only complaints would be: 1) Lack of ADHD accommodations. A professionally administered test would make make adjustments like time extensions, so it would be nice if such things were available here. 2) The subtests have an absolute limit at 145. If you max out a test then you wont be able to get a score with higher resolution. I understand that it can become very difficult to this, and for a free test it is a lot to ask, so its really a minor complaint.

Good very good

Free, streamlined and clean. you need to get a larger pool/bank of questions for some of the questions though (I don't know anything about cognitive testing :D)

The tests are of a great quality, you have direct insight in your scores and they are true to their word: when it says it's free, it's free