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Cerebrum Reviews 45,716

TrustScore 4.5 out of 5

4.3

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Review summary

Created with AI, based on recent reviews

Looking at 7,199 reviews, reviewers overwhelmingly had a great experience with this company. Customers praise the product for its engaging and challenging nature, highlighting how it helps improve awareness, concentration, and logic. Many found the artificial intelligence aspect to be accurate and insightful, providing a fun and informative way to understand their own intelligence. People appreciate the mental workout and the personalized results, which offer a deeper understanding of their strengths. However, some customers also noted significant issues with payment and subscription practices. A number of people reported unexpected monthly charges, often after taking what they understood to be a one-time free or low-cost test. These recurring charges were difficult to manage or cancel, with some reviewers indicating that they persisted despite efforts to stop the subscription.

What people talk about most

User experience

People report positive experiences with the user experience. Many found the assessments fun, informative, and... See more

Artificial intelligence

Consumers find artificial intelligence to be positive. Many reviewers appreciate the opportunity to test... See more

Payment

Clients express negative opinions regarding payment, with many reporting unexpected recurring charges after... See more

Subscription

Reviewers highlight negative aspects of subscription. Many customers report being automatically enrolled in... See more

Product

Reviewers mention positive feedback about the product, with some customers liking Cerebrum and finding the IQ... See more

Reviews shaping this summary

Rated 4 out of 5 stars

I have been teaching for about 17 years in university. I read different book and contact with different talented people and I always watch different podcast and media. So I think those are key factors... See more

Company replied

Rated 4 out of 5 stars

I liked Cerebrum more than I expected. I love that it made me focus on small details instead of clicking through on autopilot. It was a nice mental workout and gave me something to think about after.... See more

Company replied

Rated 4 out of 5 stars

The test is great. I had to put my brain to work, focusing completely on little detail which I might have thought did not matter.

Company replied

Rated 4 out of 5 stars

The rest made me realise that l need to continually keep my brain busy by learning new things

Company replied


Company details

  1. Educational Testing Service

Written by the company

Discover your intelligence score through Cerebrum's comprehensive assessment. Our 30-question test provides detailed insights into your cognitive abilities, complete with a personalized certificate. Join over 500,000 users who have uncovered their intellectual potential with our engaging test.


Contact info

Uncover Your Intelligence Score Now!

Complete the 25-question test and receive your detailed results.

4.3

Excellent

TrustScore 4.5 out of 5

46K reviews

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Replied to 100% of negative reviews

Typically replies within 24 hours

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Rated 1 out of 5 stars

This is a parent company of MYIQ who…

This is a parent company of MYIQ who lead u to believe u r entering a £1.00 trail with two 50ppayments and then say u signed up and no mention of a £29.99 recurring charge I paid with PayPal I was totally unaware of further charges and have cancelled MYIQ allegedly subscription payments pending I will be in contact with my bank and PayPal please be AWARE of this practice it not even UK based

May 3, 2026
Unprompted review
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Reply from Cerebrum

Dear Christina Mcfaul, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number CHRISTINAMCFAUL718120 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

Predatory billing and refused refund for unused service

I am extremely disappointed with MyIQ. I took a one-time test for a small fee, but I was automatically enrolled in a high-priced monthly subscription without clear notice.
Despite the fact that I have not used the service even once since the charge, their customer support (David) repeatedly refused my refund request using scripted responses. They claim the service was "available," but charging customers for a service they never accessed—especially after a misleading sign-up process—is predatory.
I have already contacted my credit card company to dispute the charge. Beware of this site; they make it very easy to charge you but nearly impossible to get your money back.

[UPDATE] WARNING: Deceptive and contradictory support.
One manager (James) officially promised a refund and gave me a reference number ,but then another person (David) contacted me to say they won't honor it. They are playing games and lying to customers. This is a scam-like experience. I have reported this to my bank for a chargeback. DO NOT TRUST THIS SITE.

May 10, 2026
Unprompted review
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Reply from Cerebrum

Dear AAAA, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number AAAA533127 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

Keep asking me for my email for refund…

Keep asking me for my email for refund which i stated multiple times, bad service and support and lack of brain cells for a iq test 1/10 horrible service.

May 8, 2026
Unprompted review
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Reply from Cerebrum

Dear Haxxi, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number HAXXI411788 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

Complete scam

Complete scam, took a free test and was charged €30 a month for several months without agreeing to it and did not notice them taking money out of my account for several months without notifying me. Hidden fees, would completely avoid this website and planning on reporting them.

May 4, 2026
Unprompted review
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Reply from Cerebrum

Dear David, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number DAVID686996 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

What a scam

What a scam. I never made an account, I have no idea how Cerebrum IQ got my bank info. Their AI bot “David” sends me around and around in circles because they’ve been charging me monthly for 4 months. Bot can’t find my account, because there isn’t one… because I don’t have one. I’m calling my bank for a charge back tomorrow and reporting them to the BBB

Edit:customer service contacted me with hopeful intentions. Turns out, the hopeful emails were just another bot and I still haven’t spoken with a customer service representative to end these unapproved charges. Super scam, they’re out to get your money!

May 3, 2026
Unprompted review
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Reply from Cerebrum

Dear Niles Niles, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number NILESNILES573900 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

Scam business

Scam business. They work on a subscription model. Even if you cancel your subscription they will keep charging you monthly until you realise and cancel. Should you realise, they make empty promises that they will refund you via PayPal but to no avail.

Quite frankly this company should have been struck off any legitimate business register years ago. How that can continue to operate is a mystery and a scandal.

May 5, 2026
Unprompted review
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Reply from Cerebrum

Dear Matthew Dodd, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number MATTHEWDODD780494 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

This parent company runs multiple…

This parent company runs multiple scams. myiq.com frequently charges and scams customers even after cancellation

May 1, 2026
Unprompted review
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Reply from Cerebrum

Dear Mike Jones, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number MIKEJONES661156 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

This is a scam company

This is a scam company. Do not leave any information there under any circumstances. In just over a year, they scammed me out of more than 40,000 yuan. Every deduction was made without notice or receipt. They are an openly fraudulent company. Remember not to leave any information.

April 30, 2026
Unprompted review
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Reply from Cerebrum

Dear 張允澤, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number 217377 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

​SCAM ALERT: Deceptive tactics and unauthorized charges!

Stay as far away from Myiq as possible! This site is a complete fraud. They use deceptive marketing to lure you in and then charge your card nearly 800 CZK without any clear authorization or providing any real service.
​It’s a classic "dark pattern" scam designed to trap you into a subscription or a one-time fee you never agreed to. There is no customer support to speak of, and getting your money back is nearly impossible through their platform.
​If you have already been scammed, contact your bank immediately to block your card and request a chargeback. Do not trust their "terms and conditions" – they are thieves. 1/5 stars is still too much for this criminal operation.
I have already received an email from your support (David) claiming the refund was 'processed'. Now you are asking for my details again. This is inconsistent. I will not provide any sensitive financial data. Just refund the transaction linked to my email/Google Pay account immediately

April 24, 2026
Unprompted review
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Reply from Cerebrum

Dear Max Švanda, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number MAXVANDA755649 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

Charged for a subscription I didn’t order

I have been charged for a subscription that I did not sign up for and cancelled in June of 2025. New charges started recurring in January-April for $31.97/mo for a total of $127.88 that must be refunded. I contacted Cerebrum IQ and since, after corresponding with a “David” and getting the same response month after month, I still have not received a refund. This company is a scam. I am pursuing legal action for this and the chargeback fees and reporting this further.

January 28, 2026
Unprompted review
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Reply from Cerebrum

Dear Carrie Nelson, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number CARRIENELSON662009 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

This is just a scam to take your money

This is just a scam to take your money

April 22, 2026
Unprompted review
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Reply from Cerebrum

Dear Cheryl Sackler, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number CHERYLSACKLER797073 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

'I was charged without my consent!!!!

'I was charged without my consent!!!!! Then they wanted another 14 dollars to send them a registered letter. IF I could give them a negative 15 star review, I would. Crooks!

April 22, 2026
Unprompted review
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Reply from Cerebrum

Dear Ellen Anne Eddy, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number ELLENANNEEDDY495709 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 5 out of 5 stars

Insightful and Engaging Cognitive Test

I tried Cerebrum’s assessment from the U.S., and it was both fun and informative. The 30 questions were challenging but engaging, and the results gave me real insight into my strengths. The personalized certificate was a nice touch too!

March 2, 2026
Unprompted review
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Reply from Cerebrum

Dear Brycen Weeks, Thank you for your wonderful review of CerebrumIQ! Your feedback means a lot to us. Best regards, CerebrumIQ

Rated 1 out of 5 stars

Cerebrum IQ IS A SCAM!!!!!

Cerebrum IQ IS A SCAM!!!!!
Also MyIQ.com (Dan Obegi)
DO NOT SEND MONEY OR BUY ANYTHING!!!

#Reddit #Scams #MyIQ

April 20, 2026
Unprompted review
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Reply from Cerebrum

Dear Mark Adams, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number MARKADAMS455525 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 2 out of 5 stars

I filled out the trial test

I filled out the trial test, and I was charged for the test. Who doesn't want to know their IQ 48 years after college? And all was well. Oh, by the way, "I am a genius!" NOT. I got a charge on January 20th for 24.99. Oops, my fault, I didn't cancel. I made a request to cancel, and was charged again on the 17th of February. I emailed to let them know I had cancelled, and on March 16th, another charge. Very irritated I called............ now again this month on the 13th April, I am charged. $74.97 later, I am still being charged for a subscription I cancelled in January. Beware, the greatest genius is the one who doesn't get trapped in the Cerebrum IQ circle.

January 7, 2026
Unprompted review
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Reply from Cerebrum

Dear Tina M Davis-Zvolanek, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number TINAMDAVISZVOLANEK923564 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

This company is a scam

Absolutely awful company. Signed up for a free trial once and they began to take money put of my account non stop. I changed my card number just cause of this and they managed to find my new number and continue to charge me. Ive asked for a refund and nothing, Ive lost almost $200 to them and as a teenager that's a lot of f****ing money. Ive posted about this scam on Reddit and all other platforms. DONT TRUST THEM

April 19, 2026
Unprompted review
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Reply from Cerebrum

Dear Caitlyn, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number CAITLYN269709 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

Bait and switch unethical billing

I signed up for a one time test and have been charged $19.99 for months without my knowledge. This has been raised with Apple Card's fraud department who is also investigating this. It is unfortunate because the product could have a lot of benefit, but this bait and switch is unethical and fighting it is time consuming.

April 17, 2026
Unprompted review
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Reply from Cerebrum

Dear Roberto, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number ROBERTO185683 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

DO NOT TRUST THIS COMPANY!

I agreed to pay $1 for an IQ test and NOTHING ELSE. Definitely no terms and conditions agreed to or any fine print, the cheap IQ test is just a fraudulent way for this company to get your CC number and then charge you without your knowledge thereafter until you find out. I have been charged $29.99 per month for at least six consecutive months now, unwillingly. There is no way to cancel the monthly payments through the company's website. This is seriously wrong on so many levels.

April 15, 2026
Unprompted review
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Reply from Cerebrum

Dear Liv, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number LIV935592 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

These guys have been robbing me each…

These guys have been robbing me each month for god knows how long I can’t get an answer they refuse to show me where I asked for this and they are taking 32 a month out it’s massive scam and all the responses are AI all the same .. they won’t tell me
What it’s for and refuse to do refund then despite saying they cancelled my whatever I would call this ? They said it’s cancelled then tried today to take money out I’m speaking to Afterpay but after reading all these I’m going straight to the police . Scammers

April 14, 2026
Unprompted review
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Reply from Cerebrum

Dear kim coffey, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number KIMCOFFEY630640 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

Rated 1 out of 5 stars

I have been trying to cancel this…

I have been trying to cancel this account since May 2025. The website account link leads to an unloadable page as does their cancellation link. The phone number is a scam as well. They have been charging my card $9.99 a week since May 4, 2025. I am now filing a complaint with my bank and disputing that way because I can't get any other response.

May 5, 2025
Unprompted review
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Reply from Cerebrum

Dear Dawn Naylor, We’ve sent a request via TrustPilot to identify you in our system. Once you provide your details, we’ll promptly process your refund within a few hours, as it has already been approved. Here's your reference number DAWNNAYLOR438740 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

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