QuartileReviews of quartile.com

The team is proactive, professional, and always focused on finding new opportunities for growth. A special mention to Victor, our account manager, who has been incredibly supportive, responsive, and committed to helping us achieve our goals!

Quartile has done an excellent job managing Skullcandy’s advertising across multiple countries. Victor Martino, in particular, has been an outstanding partner—efficiently managing regional budgets while consistently meeting our sell-through expectations and ACoS targets. Victor is highly responsive, dependable, and always on top of key priorities. He uses data effectively to identify opportunities, optimize performance, and make informed recommendations. We’re seeing strong growth across all regions and truly value Victor’s expertise, attention to detail, and commitment to our business.

Seven months with Luiz Monclar at Quartile and our Amazon sales have grown every single month — we've more than 10x-ed our monthly sales since we started. What sets Luiz apart isn't just results, though. He's friendly, dedicated, and incredibly responsive. He answers questions same-day, explains the "why" behind every strategy shift, and genuinely cares about our brands. Working with him feels like having a teammate, not a vendor. Highly recommend.

We've been working with Quartile for several months now and we are very pleased with the results we are seeing in sales. Our Quartile manager Cesar has been excellent in his service and management of our account.

Excellent experience from the very beginning. The onboarding process was extremely smooth, organized, and professional. The team took the time to understand our existing Amazon PPC structure and was very considerate about making the transition as seamless as possible, ensuring that nothing we already had running was negatively impacted. Communication was clear throughout the entire process, expectations were well managed, and we always felt supported. Their attention to detail and willingness to adapt to our current setup made the onboarding much easier than expected. Very professional team and a great start to the partnership. Highly recommended!

We have spent one quarter with Quartile and had an almost 100% increase over 2025. 96% to be exact. This is crazy growth number. Far exceeded expectations. Leticia Fernandez is an amazing asset and has been wonderful to work with.

We've been working with Quartile for several years to manage our Amazon advertising, and the experience has been consistently strong. Our account rep, Victor Martino, has been an outstanding partner. He's highly responsive, brings recommendations that are always backed by data, and takes the time to understand our business rather than just pushing generic optimizations. His strategic guidance helped us grow the account while simultaneously reducing ACOS, which is exactly the kind of efficiency every brand is looking for. If you're evaluating ad management platforms, Quartile's combination of technology and hands-on account support is hard to beat.

Gustavo is great, he is helping me scaling my business, consulting so it makes sense for me to join Quartile. Very responsive and friendly. Very excited with the next steps