Best Alternatives to Square: Sticky Add to Cart Barfor Shopify (2026)

Avada Order Limit Quantity MOQ is helpful for businesses that need to set minimum order quantities or limit the total order value or weight. It doesn't provide a sticky add to cart button, but it's useful for managing order quantities and preventing fraud, especially for wholesale or B2B businesses.

While Square: Sticky Add to Cart Bar focuses on making the add to cart button more accessible, EG Auto Add to Cart Free Gift takes a different approach by incentivizing purchases with free gifts. You can create rules to automatically add free products to the cart based on cart value or specific items purchased, encouraging customers to spend more.

If you are looking to not only keep the add to cart button visible, but also offer complementary items or upsells on the product page and cart, Essential Upsell & Cross Sell is a great choice. This app focuses on increasing Average Order Value (AOV) with frequently bought together products, bundles, and post-purchase upsells, something the Square app doesn't offer.

AMP ‑ Slide Cart Drawer (No information on features provided)

Essential Free Shipping Upsell encourages customers to add more items to their cart by displaying a progress bar towards free shipping. Its integrated cart upselling and cross-selling features directly contribute to increased sales beyond the initial add to cart, something that Square: Sticky Add to Cart Bar doesn't address.

Kaching AI Slide Cart Drawer helps boost AOV with a customizable slide cart that includes urgency timers, free shipping bars, and payment icons. If you are looking to make the checkout process faster and more inviting, this can make a big difference in comparison to the stand alone add to cart button.

Opus Cart Upsell Cart Drawer provides a comprehensive approach by combining cart customization with upselling, cross-selling, free gifts, and reward bars. The sticky cart button feature directly replaces the function of Square, while the additional features significantly enhance the cart experience and potentially recover abandoned carts.

MultiVariants ‑ Bulk Order (No information on features provided)

GoodAPI Plant Tree Clean Ocean allows you to integrate sustainability into your store by planting trees and removing ocean-bound plastic. Although it doesn't directly replace the sticky add to cart functionality, it focuses on customer loyalty and engaging eco-conscious customers, which can positively influence purchasing decisions.

Payment Rules Hide PaymentHero focuses on optimizing the checkout experience by allowing you to sort and hide payment methods. While it doesn't directly relate to the functionality of Square: Sticky Add to Cart Bar, streamlining the payment process can contribute to overall conversion rate improvement.