Today's Project: Buy Button vs Zapio: Cross Sell & Upsell App: Shopify App Comparison (2026)

Key Features

• Sticky add-to-cart buy bar displayed across all product pages
• One-click checkout for a faster purchase experience
• Quantity selector for adding multiple items and increasing AOV
• Fully customizable design with no developer needed
• 100% compatible with Online Store 2.0 themes

Verdict on Today's

Today's Project: Buy Button is one of the most affordable conversion tools at just $3.95/month. The sticky buy bar keeps the purchase option visible as customers scroll, reducing friction. With 4.8 stars, 13 reviews, and 7+ years on the market, it is proven and reliable. Great value.

Key Features

• Upsell, cross-sell, BOGO, BXGY, and frequently bought together in one app
• Progress bar with milestone rewards encouraging higher cart values
• Automatic free gift insertion and free shipping automation
• Custom rules, scheduling, and market targeting with multi-currency support
• Real-time analytics tracking promotion performance

Verdict on Zapio:

Zapio is a remarkable completely-free upsell app that includes features other apps charge $20-40/month for. The progress bar and milestone rewards system is a standout feature that drives spending increases. It is still very new with only 9 reviews, so reliability over time is unproven, but the feature set is genuine and the zero-cost entry makes it risk-free to try. A strong option for budget-conscious merchants.