Opus Cart Upsell Cart Drawer

I've been using OPUS since it was a startup, and I can confidently say it’s the best cart app I’ve ever worked with. Over the months, as my business grew and my needs evolved, OPUS kept improving right alongside me. I haven't found another cart app that comes close to meeting my store’s specific requirements — and believe me, I’ve tried a few.

What truly sets OPUS apart is not just the functionality, but the incredible support team behind it. A special shoutout to Katie, David, and Lulla — they’re always available, providing prompt, helpful feedback, and going above and beyond to assist whenever needed. Since my store sells personalized products, setting up and optimizing the cart required extra attention and customization. The OPUS team handled this flawlessly, tailoring solutions that worked perfectly for my unique setup.

If you’re on the fence about which cart app to choose for your Shopify store, don’t hesitate — go with OPUS. It’s powerful, reliable, and backed by a team that genuinely cares about your success. I simply love it!

This is a great little app. I'm still learning some of the features but it mostly does what I need it to do. Upsell, discount codes, tiered rewards based on different criteria. Customizable cart look and feel. Plus so far the support has been great. I worked with Lulla to get answers to my questions and get updated to the latest version. Thank a bunch!

A Must-Have for Smart Upselling and Stellar Support

I’m generally not inclined to use external apps for my store, but Opus completely changed my mind. The cart is beautifully designed and packed with intelligent upsell features that truly enhance the customer experience. What impressed me even more was the exceptional support provided by Lulla and Katie—quick, responsive, and genuinely helpful. If you're looking for an upsell solution backed by a team that actually cares, I’d 100% recommend going with Opus.

The freedom to customize if better than any of the other cart apps I've tried. I had an excellent experience with Opus Carts support team.

Very quick to respond, (faster than another popular app I was previously using) they helped me fix my exact problem, quickly making sure it's exactly how I wanted it.

Best cart app I've tested.

Outstanding Support – Huge Thanks to Katie & Lulla!

The app itself is super intuitive and does exactly what it promises — but what really stood out to me today was the exceptional support. I had a few custom implementation questions and both Katie and Lulla went above and beyond to help. They were fast, knowledgeable, and genuinely cared about solving my issue — not just giving a generic answer.

It’s rare to find support this good, and they made the entire experience smooth and stress-free. Massive shoutout to Katie & Lulla — you two are rockstars!

Highly recommended — both the app and the amazing team behind it.