Banner for Cerebrum

Cerebrum Reviews 

45,723
TrustScore 4.5 out of 5

4.3

While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more

To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more

See what reviewers are saying

Rated 5 out of 5 stars

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 personali... See more

Company replied

Rated 4 out of 5 stars

Update - after posting this review, Cerebrum got in touch with me and located the account that was charged. They refunded all of the unauthorized charges with an apology. I have no idea how I got... See more

Company replied

Rated 3 out of 5 stars

This company use deceptive billing practices. I paid €0.99 for what I understood to be a one-time test. Shortly after, €14.99 started being deducted from my account every week!!! I did not author... See more

Company replied

Rated 5 out of 5 stars

I have decided to leave my initial review up, as I think it important for others to see my initial issue, their response on here, and then my final experience. So, after messaging Cerebrum, I was mes... See more

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

5-star
4-star
3-star
2-star
1-star

Asks customers to review

This company invites their customers to review, whether positive or negative

Replied to 100% of negative reviews

Typically replies within 24 hours

How this company uses Trustpilot

See how their reviews and ratings are sourced, scored, and moderated.

4.3

All reviews

(45,723)

13,237 reviews in the last 12 months

Write a review
Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 1 out of 5 stars

Fell for take free IQ test then money…

Fell for take free IQ test then money starts coming out of my checking account monthly. Cancelled. Then money started coming out of my PayPal line of credit monthly. Asked for refund from PayPal and they gave refund then they came back and said my dispute not valid because I authorized monthly charges and am using Cerebrum services - I do not use their services and never authorized them to leech money first from my checking account and now my PayPal account. I can’t get it to stop either from Cerebrum or PayPal. Horrible experience - many days on phone and emails and no one will help -

5 April 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Patricia Norris, 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 PATRICIANORRIS181648 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

Misleading “free test” turned into unauthorised charge

I took what was advertised as a free IQ test on MYIQ and ended up being charged $48.99 without clearly consenting to any subscription.

There was no obvious or transparent point where I agreed to a paid service. It felt like a typical “free test” flow, and only afterwards did I realise I’d been signed up and charged.

When I contacted support, they refused to refund me and just pointed to their “no refund policy,” which doesn’t change the fact that the payment was not properly disclosed in the first place.

After this happened, I looked online and saw multiple people reporting the exact same issue, which honestly says a lot.

This whole experience feels misleading and intentionally unclear. I would strongly recommend being very careful before using this site, especially if something is advertised as “free.”

I’ve now had to escalate this further.

Update- you have all of my information stop lying pretending like you are trying to assist me with a refund. Give me the refund i deserve and i will stop the legal action currently being taken against you.

3 April 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Emily, 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 EMILY285895 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 agreed to pay $1 to get my test…

I agreed to pay $1 to get my test results from your website. Not only did I not receive my score, I was immediately charged $29.99, without my consent. I have attempted to cancel my subscription that I never agreed to, but was given a "email does not exist" error message, so that I'm prevented from canceling and will be charged without my consent AGAIN. I will be contacting the FBI, the Federal Trade Commission, and the BBB. I also will post my story on every social media account I have and tell all my friends and family to stay away from this scam site. I am demanding my money back. I agreed to the $1 free trial 6 days ago, but the charge was $29.99 immediately. Your policy is a legal document that clearly states a $1 charge is the ONLY charge for 7 days. You breached your own contract. That's a lawsuit against your company right there! If I could give negative stars, it would be negative infinity!

26 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Shelley Clark, 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 SHELLEYCLARK850883 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 was a terrible experience

This was a terrible experience. I had no idea I was going to be charged 29.99 per month until I sat down to do my taxes. I am a senior citizen and have a limited income. I am sad to see companies take advantage of those who think they are using a one time service. NEVER AGAIN would I even consider using them. I WANT A REFUND.

1 January 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Judy Stevenson, 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 JUDYSTEVENSON807855 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 mother company to…

This company is a mother company to MYIQ, which is a scam company. I woke up to a 32.96 charge. I didn’t agree to a subscription. Their offer said nothing about a trial period. I agreed to a test bc it was affordable (99 cents) They have you pay $0.99 to get your IQ score. They send an email with your results but they also give you your results on the screen. So what’s the point of going to the email if they’re available to me on screen, right? That’s how they get you, they email is where the hidden fees are. I tried reaching out to the company and I’ve yet to receive a response. They have no CSR number. Their parent company is CerebrumIQ! I was going to reach out to them but of course I cannot find an email or telephone number. Do not work with these people they will scam you.!

2 April 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear K Brown, 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 KBROWN226626 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

MYIQ & Cerebrum

MYIQ is part of this group and engages in misleading practices. They charge customers without clearly explaining that a recurring monthly fee applies. In my case, I was charged £24.99 per month when I believed I was only paying £1 for a single MYIQ test result. I’ve also seen numerous reports on social media from others who experienced similar issues, with some being charged £29.99 monthly. Avoid! Scammers!

30 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Sue Galway, 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 SUEGALWAY594256 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

Misleading .

Misleading .

The Facebook page is so wrong and misleading because it does not make it clear that there is a monthly fee.

So if you do the questions you get to a screen that tells you for 50p or £1 you can get your IQ report. If you don't pay and forget about it they bombard you with emails. Just 1 big scam

31 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear MRS ANNE HUDSPITH, 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 MRSANNEHUDSPITH146671 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

Still have not received a refund.

Still have not received a refund.

30 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Natasha, 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 NATASHA674746 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

If I could give zero stars, I would

I am extremely disappointed with the lack of ethical billing standards at myiq.com (a Cerebrum company). My minor child was recently enrolled in a subscription service without my knowledge or authorization.

I contacted the company the same day the charge appeared to request a refund, citing that a minor cannot legally enter into a binding financial agreement. Management refused to honor this request or refund the $30.00 fee. I would advise other parents to exercise extreme caution when dealing with this organization’s platforms.

30 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Josie, 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 JOSIE344134 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

Be very aware of signing up

Since writing a scathing review about how money was taken without consent or collaboration i have had one payment refunded but still await the 2nd to be refunded. Seemingly there are some humans that work for the business and not just BOTs. I will see if the communication continues and will report back positively once my issues have been resolved.

18 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear MR STUART LOGAN, 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 MRSTUARTLOGAN608297 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

$730 taken from my account without clear consent.

I wish I had looked at these reviews before handing over my card details. What I thought was a one-off IQ test ended up costing my family over $730 across 12 months.

I never received a single email, receipt, or notification from Cerebrum IQ — not one. No confirmation of charges, no subscription reminders, nothing. The only reason I found out how much had been taken was because I sat down and went through a full year of my own bank statements. I had no idea this was even happening.

The subscription was never clearly explained to me at the time of signing up. I genuinely believed I was paying once to see my results. Had I received even one email telling me I was being charged monthly, I would have cancelled immediately.

I'm now disputing the charges with my bank and have reported this to the ACCC. I really hope Cerebrum IQ does the right thing here — but based on what I've read from other Australians in the same situation, I'm not holding my breath.

Please do your research before signing up.

30 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Sally Westra, 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 SALLYWESTRA431320 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

MY IQ SCAM

Stay away from this company - they advertise on Facebook as MyIQ for $1.00, take your dollar and then bill you a monthly subscription and have zero interest in refunding your money...cheats, stay away!!!!

28 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Virginia Turner, 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 VIRGINIATURNER924467 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

Fraudulent company

Fraudulent company. Give you a code to 'help find your account' and then state they have a no refund policy and can't locate your account. Thieves and fraudulent

28 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Beckii, 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 BECKII952064 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

Absolute parasites

Vile company, trick you into subscribing at £30 per month after you pay £1 for your test result. No email to confirm you have subscribed, not even an email to confirm the subscription payment (that you weren't aware of) coming out. They rely on the fact people don't check their bank statements. They just rely on the small print to avoid giving refunds. Absolute parasites. They should be thoroughly ashamed of themselves, lowest of the low.

28 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Paul Escudier, 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 PAULESCUDIER981943 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 want to share my experience with…

I want to share my experience with Cerebrum IQ.

Although they agreed to refund my money, the refund has not yet been paid. Despite my attempts to resolve the issue, I am still waiting to receive it.

What is even more concerning is that, even after cancelling my subscription, they continue to charge me month after month — sometimes even multiple times within the same month.

This behavior is completely unacceptable and highly unprofessional.

27 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Jenny Moetefindt, 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 JENNYMOETEFINDT609798 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

Es agradable e interesante.

Es agradable e interesante.

26 March 2026
Cerebrum logo

Reply from Cerebrum

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

Rated 1 out of 5 stars

Stay well clear Thiefs

Stay well clear, fraudsters, scammers, thief and no one to answer emails apart from David the Bot. They have somehow taken payments of £29.99 two months in a row and I have sent numerous messages to say I want a refund and have not signed up to this subscription. They can't find my details. So will be reporting them today. Stay well clear

25 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Stuart, 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 STUART875855 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

TOTAL SCAM

I did a IQ test with My IQ which is a branch of this company. I agreed to the 99 cent to reveal the results.
Seven days later they took 29.99 from my bank.
I DID NOT sign up to a subscription.
I am disabled and live on as low income so this was a huge shock.
TOTAL SCAM

24 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Catherine Burgess, 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 CATHERINEBURGESS417556 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 SCAM SCAM SCAM

SCAM SCAM SCAM SCAM. DO NOT ENGAGE WITH THIS COMPANY OR MY IQ.COM ON SOCIAL MEDIA! THEY WILL FRAUDULENTLY WITHDRAW MONEY FROM YOUR ACCOUNT AND ISSUE NO REFUND.
You will get a response on here with a reference number and an endless amount of scripted emails from a bot claiming they have issued a refund and there's a problem with your bank. They will promise to resolve it and will continue with the scripted emails and will not issue a refund. DO NOT ENGAGE WITH THEM ON SOCIAL MEDIA. I HAVE POSTED EVERYWHERE I CAN TO MAKE PEOPLE AWARE AND WILL CONTINUE TO DO SO. THEY ARE STEALING MONEY FROM PEOPLE. BLOCK THEM IMMEDIATELY AND INFORM YOUR BANK AS THEY WILL CONTINUE TO FRAUDULENTLY WITHDRAW MONEY FROM YOUR ACCOUNT.

As you can see from their response, it is a bot reply with another reference number and a promise of a refund. THIS LEADS TO AN ENDLESS AMOINT OF SCRIPTED EMAILS WITH NO REFUND IN SIGHT. DO NOT ENGAGE WITH THEIR SITES AT ALL AND DO NOT TRUST ANY POSITIVE REVIEW.

11 March 2026
Unprompted review
Cerebrum logo

Reply from Cerebrum

Dear Fuzzbuzz, 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 FUZZBUZZ167127 as it will allow us to quickly identify your account and ensure this is handled promptly.

Thank you! Cerebrum IQ Team

The Trustpilot Experience

Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.

We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.

Learn about Trustpilot’s review process.

Here are 8 tips for writing great reviews.

Verification can help ensure real people are writing the reviews you read on Trustpilot.

Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.

Take a closer look