Shopify App Comparison 2026

Amp Slide Cart Upsell Drawer

5.0633 reviews
VS

Simple Bundles & Kits

4.9692 reviews

Which Shopify upsell app increases AOV more? Compare pricing, features, ratings & real merchant reviews for Amp and Simple Bundles & Kits to find the best fit for your store.

Built for Shopify

Add slide cart to boost AOV with upsells & free shipping bar.

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Key Features

  • Cart drawer with sticky cart functionality
  • Cart upsells and cross-sell recommendations
  • Frequently bought together suggestions
  • Free gift promotions (BOGO mechanics)
  • Tiered rewards progress bar
  • Countdown timers for urgency
  • Shipping protection and warranty toggles
  • Multi-language and multi-currency support

Verdict on Amp

Amp Slide Cart is a well-established cart drawer app with a perfect 5.0 rating since 2019. It offers a comprehensive feature set including tiered rewards, free gifts, and urgency timers all within the slide cart experience.

Built for Shopify

Build mix match product bundle for 3PL fulfillment & inventory.

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Key Features

  • Multiple bundle types (fixed, mix-and-match, build-a-box)
  • Automatic SKU breakdown for 3PL fulfillment
  • Real-time inventory synchronization
  • AI-generated bundle suggestions from order history
  • Volume discounts and quantity breaks
  • BOGO and free gift functionality
  • Subscription bundle support
  • Shopify POS and ERP integration

Verdict on Simple

Simple Bundles is the go-to choice for merchants who need proper inventory sync and 3PL fulfillment with their bundles. Its automatic SKU breakdown sets it apart from other bundle apps that only handle the frontend.

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