QuartileReviews of quartile.com

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.

Pedro has been great with onboarding us!

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.

Smooth process of work and very efficient. Their employees are a pleasure to work with, specifically Gustavo and Gabriel.

Superb company to work with! Laura at Quartile is fantastic, always attentive and always bringing ideas to grow our account. Would recommend! :)

I've enjoyed my experience with Quartile. Their account managers are friendly and knowledgable and while only short-term so far (3 months), my sales results have been strong.