Quartile, the world's largest retail media optimization platform, is a trusted partner for multichannel e-commerce success. Through patented AI technology and unmatched expertise, we fuel growth for 5,300+ brands and sellers worldwide and manage an annual ad spend exceeding $2 billion. The award-winning platform covers major marketplaces and ad channels for optimal reach. The result is unprecedented granularity, smarter budgeting, and bespoke solutions for retailers. Visit quartile.com to learn how to boost efficiency, outperform competitors, and achieve profitability.
Quartile (quartile.com) has 565 customer reviews on Five Star Index, with an average rating of 4.6 out of 5.
Also known as
quartile.com
Website
quartile.com
Category
IT & Communication
Location
New York, New York
Listed on Five Star Index
2026
About these reviews
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The company replied to 67% of reviews.
Latest
Most recent review: October 2026.
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Reviews are shown as their authors wrote them. The company can reply, but cannot edit them.
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Quartile provides an exceptional service with their algorithm that gets better every day as it accumulates data from your ppc campaigns. If you're after success in one month, that is not where you should go as you will end up blaming it on Quartile. I've been working with quartile since the launch of my product and am happy to say that ı get a great service from that company. On top of that, Decio Maeda who is the responsible person in my account even exceeds my expectations from that company. I even get into contact on Sundays. Whenever ı need update or have any question in my mind, ı e-mail him and he comes back fast no matter what the day is and with a super motivating, comforting but most importantly honest responses. I would recommend Quartile to anyone in this business, but if you have a chance, don't miss Decio, the magnificent too :)
JO
Jose
Getting a new perspective on exactly…
Getting a new perspective on exactly what my ads needed to reach their full potential saved my business.
TJ
Terrence J.
Really excellent performance
Really excellent performance
JE
John E.
3 months wasted waiting for quartile to act.
They started in July to connect Quartile to seller central in order to sell my KDP books. They found out in late September that seller central does not accept books for advertising on Quartile. For 3 months they ignored me, lied to me, told me it was just around the corner we would launch, and never did. I was a software engineer once in my life, and I got so frustrated I completed the connection of Quartile to seller central myself. They ignored me and didn't even know what i was doing to make the connection. I wasted thousands and thousands of dollars in lost opportunity while I waited for them to act. Bogus, stay away. I am a lawyer. Bring it.
VL
Vitalii L.
I lost tens of thousands with this…
I lost tens of thousands with this company.
Their system does not work properly, and overbid.
My ACOS jumped from %22 to 39%
DD
Dr. D.
Violating Fiduciary Responsibility
I started working with Quartile 3-months ago and worked with an account manager. In email, we agreed to a budget cap of 3K/month and said "We will work to keep the average ad spend $50 daily for each country" (we agreed on 2 countries, so $100/day, 30 days = 3K) and said she "Yes, we will be monitoring it" (because their system does not allow them to set a budge account because I have a vendor account - which I DONT, KDP authors can set a budget through AMS ads). This should have been a red flag upfront - they don't know enough about Amazon's KDP system which clearly allows for budget setting (Campaign-Campaign Settings-Budget, or their system is that crappy, and the rep is too lazy to actually set a budget rule). The result was my ACOS was in the hundreds for 2 months! I've been running it at 20% for the past 4 years). I tried to give her a chance as she said their system was learning (they like to toss around words like AI and machine learning). Well it didn't learn, and after 2 months of bleeding money, I decided to cancel (on Sep 7th). BUT THEN, I took a look at my account and found it was NOT being monitored!!! within the first 8 days of September they spent $5,548! What happened to monitoring agreed on budget and a fiduciary responsibility. What happened to doing your job? If I hadn't cancelled, I wonder what our meeting would be like? You screwed up and snoozed? Anyways, I'm speaking with the team now and asking to be made whole. I'll get back to you to see Quartile actually does the right thing (why should I have to pay for the incompetence or negligence of the account manager) and returns the unauthorized spend, or I'll have to file claims. Email me/contact me if you want to hear more/get together and file a claim if the company doesn't want to do what is right. I've asked to speak to upper management a few times now, but like the previous review, they don't connect you with people that will actually help. INFACT, the customer success manager emailed me today saying "We would like to offer you a special condition of 50% discount for your next 3 billing cycles so that we can move on and jointly pursue your objectives." LIKE REALLY? Hello upper management, founders, are you listening to this? My objective is not to get scammed!
GO
Godehu O.
Wow PPC Management is the best and I…
Wow PPC Management is the best and I have likewise recommended my clients with an enormous item inventory to utilize Quartile's Overseen plan. They have seen surprisingly good outcomes with the Oversaw plan. I will prescribe my clients to utilize Quartile's all's Overseen plan from now on
DN
Dena Nadia N.
Its been a pleasure working with…
Its been a pleasure working with Quartile. They are a great advertising company! They deliver as promised and are very easy to use. Our sales significantly increased within the first couple of weeks working with quartile. They are responsive and professional. I would recommend them to anyone.The price is also great and you get good results.