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Free vs paid IQ tests
Search for an IQ test and you will find dozens that call themselves free. Some are. Many are free to take and charge for the result. A few turn a small charge into a subscription. None of these models is automatically good or bad, but each one pays for itself somehow, and knowing how tells you what you are getting.
Want your own number? The test is 25 visual puzzles, about 12 minutes, no sign-up.
Four ways tests pay for themselves
| Model | Who pays | What to watch for |
|---|---|---|
| Free with ads | Advertisers, and sometimes data partners. | Heavy ad loads, vague scoring, and a privacy policy that allows sharing your data. |
| Free to take, pay for the result | You, once, if you want the result. | Whether the price is shown before you start, and whether the payment is truly one time. |
| Small trial charge that becomes a subscription | You, repeatedly, until you cancel. | The words trial, membership or renews near the payment button, and how cancelation works. |
| Clinical assessment | You or an insurer, for a professional's time. | Nothing hidden, but it is the only option accepted for official purposes. See online vs clinical tests. |
Free, funded by ads
Truly free tests usually earn money from advertising. That is a fair trade for a quick quiz, and some of these tests are entertaining. The trade-off is incentive: an ad-funded site earns more when you stay longer and come back often, not when its score is careful. Few of these tests explain how they score you or who you are compared with.
If you take one, check the privacy policy. If your answers or contact details can be shared with partners, you are paying with data rather than money.
Free to take, pay for the result
This is the most common model among serious online tests, including IQ Octopus. You take the test without paying, then decide whether the full result is worth buying. It aligns incentives reasonably well: the test has to be good enough that people want the result.
Two things separate the honest versions from the others:
- The price is clear before you start, not revealed after you have done the work.
- The payment is one time, with no account, membership or renewal attached.
Try one · Abstract Reasoning
Which tile completes the grid?
Tap the option you think is right, or show the answer.
Show the answer
The missing tile has a large outlined circle (option 6).
How to solve it
- Start with the first column and name what changes from tile to tile.
- Every row and every column contains each shape (square, circle and star) exactly once.
- Every row and every column contains each fill (outline, solid and hatched) exactly once.
- The size (large) stays the same in every tile.
- Check the rules on the second column, then apply them to the third.
- So the missing tile has a large outlined circle.
That was 1 puzzle. The full test has 25.
The trial that becomes a subscription
Some sites charge a very small amount for your result, and the small print enrolls you in a trial that renews as a monthly membership. It is easy to miss until it shows up on a statement. If you see a low price, look near the payment button for the words trial, membership, renews or per month, and find out how to cancel before you pay. If the cancelation process is not described clearly, that is your answer.
What a fair price buys
Whatever you pay, you are entitled to know what you are getting. A paid result should include at least:
- an estimated IQ on a stated scale, with a percentile;
- a confidence range, because no test is exact;
- an explanation of the method you can read before paying;
- a clear statement of what the score cannot be used for;
- a refund route if you are unhappy.
Our guide to how online IQ tests work has a longer checklist.
Where IQ Octopus fits
IQ Octopus is free to take, with no sign-up. When you finish all 25 puzzles you can buy the full result for $4.95, once. There is no subscription, no account and nothing that renews. If you are unhappy, ask within 7 days and we refund you in full, and your result stays available. We do not run ads or sell data, which is why the result is not free: scoring and hosting cost money.
See exactly what is included on pricing, or read how the test works before you decide.