IQTester Not bad...
But it's also nothing official. The content of the questions is pretty standard for an I.Q. test, however the number of questions and from what I can tell, the scoring system are just a bit off.
To comment on a previous review(MuffinDX), time is most certainly a factor in determining the final score. That is the case with any standard I.Q. test, and if you truly picked random answers, it just means this particular test needs some work in that area. I myself got all 20 questions correct and scored a 147.