Shopify App Comparison 2026

Moon Bundles CartDrawer Upsell

5.0451 reviews
VS

Smart Checkout Widgets

5.04 reviews

Which Shopify upsell app increases AOV more? Compare pricing, features, ratings & real merchant reviews for Moon and Smart Checkout Widgets to find the best fit for your store.

Built for Shopify

Create irresistible bundles, cart upsell, free gifts, BOGOs. Increase AOV with quantity breaks, volume discounts, cart drawer & post purchase upsell.

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Key Features

  • Product bundles and free gifts with mix-and-match options and auto-applied bundle logic
  • Cart drawer and cart upsell functionality that works across all themes and third-party apps
  • Post-purchase upsells and customizable thank-you page offers
  • Volume discounts, quantity breaks, and BOGO deal builder
  • Bundle builder with fully customizable styling and layout options

Verdict on Moon

Moon Bundles is one of the best-value bundle apps on Shopify, combining bundles, cart drawer upsells, post-purchase offers, and volume discounts into a single install. The generous free tier and Built for Shopify badge make it a safe bet for any merchant. Its multi-language support and theme-wide compatibility stand out among competitors. The revenue cap pricing model is transparent — you only upgrade when your bundles are actually making money.

Built for Shopify

Personalize upsells, gifting, and custom content at checkout to increase AOV.

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Key Features

  • Smart Gifts/BOGO and automatic stackable discounts
  • Checkout UX widgets and custom banners
  • Social proof and shipping/payment reorder options
  • Custom form fields for checkout
  • Thank You and Order Status page support

Verdict on Smart

Smart Checkout Widgets is a Built for Shopify checkout customization tool that adds gifting, upsells, and custom content directly in the checkout flow. The free-to-install starter plan with 100 orders/month is great for testing. Only 4 reviews but the 5.0 rating and Shopify certification are promising.

Frequently Asked Questions

What is a revenue cap?

The revenue cap is the maximum amount of bundle revenue your store can generate per month on each plan. The free Discovery plan caps at $500, Essential at $2,000, Pro at $10,000, and Premium is unlimited. Revenue beyond the cap requires upgrading.

Does Moon Bundles work with my theme?

Yes, Moon Bundles is designed for theme-wide compatibility and works with all Shopify themes including Online Store 2.0. The cart drawer also integrates with third-party apps and custom theme modifications.

Can I create BOGO deals?

Yes, Moon Bundles supports Buy One Get One deals, Buy X Get Y promotions, quantity breaks, and progressive free gifts. All can be configured from the bundle builder dashboard.

Does this work with all Shopify plans?

Some checkout customization features may require Shopify Plus. Check the specific widget capabilities for your plan level.