Quartile Reviews 511

Exceed my expectations for our Amazon account. More than doubled our average sales using the same ad spend as our previous advert management firm.

I've been working with Quartile for years. They make running our Amazon Ads simple and easy. Alexandre listens to our needs, makes suggestions, and works with me to crush our goals. Our Amazon ads are the most optimized they have ever been.

We’ve had a great experience working with Quartile for our Amazon advertising! The results truly speak for themselves. Alexandre, our strategy manager, is incredibly knowledgeable and proactive, always bringing clear insights and strong recommendations to help us get the best performance. Highly recommend their team.

Eric was fantastic. Smart, responsive, organized and delivered a great result for us

communicate and feedback in time, highly effective

Rafaela and her team are absolute rock stars when it comes to Amazon PPC management. I have been with Quartile for about 5 years and have been very happy with them. The people there awesome and their software is the best I could find. Highly recommend.

I've been working with Quartile for 2 years and they have not only the best performing campaigns but their one-on-one bi-weekly meetings are head and shoulders above any other PPC agencies that I've worked with over the past 13 years.

Rafaela is great and the Quartile system is impressive. My account has steadily grown and I am now positive each day instead of negative net.

I hired Quartile just over 2 months to manage my Amazon PPC advertising, and so far have found them to be cost effective and highly professional. Prior to engaging Quartile, my Amazon sales had been slowly declining for 4+ months. Since hiring them, Pedro has been working on my account and I have seen improvement in top-line sales as well as better advertising efficiency (lower ACOS and TACOS). I've been an Amazon seller for about 5 years and have previously worked with 4 other Amazon ad agencies. My business is relatively small, and in my experience I've found most Amazon ad agencies structure their pricing and service plans for larger Amazon sellers. My experience with Pedro and Quartiles is that they have proactively tailored their pricing & plan to meet the needs of my smaller business. I am very satisfied so far with their service and people!
- One additional detail that I would bring up is their onboarding model is different from the other agencies I've worked with. They have a specialized team (including Pedro) that works with clients during the initial 1 - 3 month "trial period" to ensure a good fit between client and agency. If during this initial period they don't see a good fit from their perspective, they tell you directly. Their explanation for this approach is that they prefer to quickly evaluate whether their services will benefit their clients, and they are OK with some relationships ending quickly that they believe will ultimately prove unproductive for their clients (or themselves). From my perspective, I find it refreshing to see an agency focused on creating "win-win" relationships, and not just on generating fees.

I have been working with Quartile for over 18 months and have been seeing consistent good results.

Great support, communication, and we have seen growth in our account! Thanks to Mariana and Gustavo, they both have done a lot to help us learn and grow on Amazon.

Been a nice start with Quartile over the first 11 months. Seen some growth without overspending. Very mindful of our budget in creating campaigns. Our Strategy Manager has been wonderful in building out our campaigns, meetings to follow up with results and plans going forward. So far so good.

Google and Bing have become so complicated that although I handled them myself for many years, I felt like I needed experienced help with them now. Quartile has been that help and have also been open to my experience and opinions as well.

Pedro is optimistic, eager to help/please, and descriptive with what he's doing. Also, so far we've seen favorable trends, helping build confidence that we're heading the right direction.

The professionalism and cooperativeness are really supportive

There was an immediate uptick in sales and clicks. Communication is excellent. We really feel like we have a trusted partner who wants to see our sales grow.
Very clear data points and charts show us exactly what's going on and the progress being made. It has been a great choice for our Amazon Store.

I've been working with Quartile for managing our paid advertising across Google, Facebook, Instagram, and Bing, and I can't recommend them highly enough. From day one, they've consistently delivered on the ROAS targets we set, often exceeding them while keeping everything efficient and profitable.
What stands out most is how incredibly responsive and proactive their team is. My account manager is always on top of things—quick to reply (often within hours), transparent with updates, and genuinely invested in our success. They don't just set it and forget it; they're constantly monitoring, optimizing, and suggesting smart adjustments based on real performance data. Whether it's tweaking bids, refining audiences, or scaling winning campaigns, they handle it all with expertise and precision.
Thanks to Quartile, my life has way less stress when it comes to ads. I used to spend hours every week micromanaging campaigns and worrying about wasted spend, but now I can trust that everything is in great hands. They free me up to focus on the bigger picture of growing the business, knowing our ad performance is being maximized.
If you're looking for a partner that truly excels at paid media management and delivers results without the headaches, Quartile is the real deal. 5 stars all the way

We’ve had a fantastic experience with Quartile as our Amazon Ads agency. The onboarding was smooth and well-managed, and the team made us feel comfortable and confident from day one.

A special mention to Gustavo and Gabriel — they’ve been instrumental throughout, not just in getting us set up properly, but in driving the promised efficiencies and improvements within our account. Communication has been clear, proactive, and focused on outcomes.

Quartile is a fantastic tool backed by a strong team, and we’d definitely recommend it to any brand looking to improve performance and scale Amazon Ads more efficiently.

Terrible Account Management — Proceed with Caution

★☆☆☆☆

We used Quartile for DSP management on our Amazon advertising account. While the platform itself showed some promise initially, the account management experience was among the worst I've encountered in over a decade of running an e-commerce business.

Over the course of our engagement, our assigned account managers failed to show up to two separately scheduled meetings with no advance notice or explanation. Multiple emails — at least three — went completely unanswered over a period of several weeks. When we finally did get a response, Quartile acknowledged they may not have been receiving our messages, yet no one on their team thought to proactively follow up with us during that silence.

To make matters worse, we were billed management fees twice within a two-week span. When we raised the issue and filed a dispute with our bank, Quartile's response was not to investigate or resolve the billing concern — it was to immediately terminate our account. They shut down all services and optimizations while still holding a prepaid DSP balance that had not been spent.

No effort was made to retain the relationship or address the root cause of our concerns. Instead, we received a boilerplate apology and were shown the door.

If you're a small or mid-sized business considering Quartile, understand that once you sign on, accountability appears to be optional. Meetings are missed, emails go unanswered, and if you question a charge, you risk losing your entire account and the optimization work that was done on your behalf.

I would not recommend Quartile to any business that values communication, transparency, or basic professionalism from a service provider.