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.

Key Features

• Add To Cart buttons on collection pages, search results, and homepage
• Variant and quantity selection directly from product listings
• Exclude specific products or collections from displaying buttons
• Fully customizable button design to match your store branding
• Integrated with popular theme drawer carts for seamless experience

Verdict on CBB

CBB is a simple, affordable, and effective conversion booster. At $4.99/month with a Built for Shopify badge, it does one thing extremely well — adds purchase buttons everywhere. The 4.9 rating across 111 reviews confirms reliability. Great for stores where browsing collections is the primary shopping pattern.