Shopify App Comparison 2026

FoxKit AIO Upsell Cross-sell

4.9370 reviews
VS

Sumi: Full Page Bundle Builder

5.07 reviews

Which Shopify upsell app increases AOV more? Compare pricing, features, ratings & real merchant reviews for FoxKit and Sumi: Full Page Bundle Builder to find the best fit for your store.

All-in-one upsell and cross-sell toolkit with bundles, volume discounts, countdown timers, and more.

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Key Features

  • All-in-one toolkit combining bundles, upsells, cross-sells, and sales-boosting widgets
  • Countdown timers, stock scarcity alerts, and social proof notifications to drive urgency
  • Volume discount and quantity break tables with customizable tier structures
  • In-page and pop-up cross-sell recommendations on product and cart pages
  • Lightweight codebase that minimizes impact on store loading speed despite feature breadth

Verdict on FoxKit

FoxKit is the Swiss Army knife of Shopify upsell apps. If you want to avoid installing separate apps for bundles, countdown timers, stock alerts, and social proof, FoxKit consolidates everything into one clean package. The trade-off is that individual features may not be as deep as specialized apps, but for most stores the breadth and convenience far outweigh that limitation. It is an excellent choice for merchants who value simplicity and speed.

Let customers mix and match to build their own bundles and boxes with automatic inventory sync.

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Key Features

  • Flexible rules and discounts for custom bundle creation
  • Single or multiple step bundle builders
  • Automatic inventory sync with individual SKUs in orders
  • Design automatically matches your store theme
  • Fully optimized for mobile shopping experience

Verdict on Sumi:

Sumi is a clean, focused bundle builder with a perfect 5.0 rating. The auto-matching theme design and mobile optimization reduce setup friction. At $24/month with no free plan, it is priced for stores that are committed to bundling. Individual SKUs in orders simplify fulfillment.

Frequently Asked Questions

Can FoxKit replace multiple apps on my store?

Yes, FoxKit is designed to replace separate apps for bundles, countdown timers, stock alerts, size charts, and social proof notifications. Most merchants can uninstall 2-4 apps after switching to FoxKit, improving store performance and reducing monthly costs.

Does FoxKit slow down my store?

No, FoxKit is built with a lightweight codebase that loads features asynchronously. Despite its wide feature set, the app has minimal impact on page speed, which is a key advantage over running multiple separate apps.

What are pop-up impressions?

Pop-up impressions are counted each time a FoxKit pop-up widget (such as a cross-sell offer, countdown timer, or stock alert) is displayed to a visitor. The free plan includes limited impressions, with higher tiers offering 30,000 to unlimited impressions per month.

Does Sumi track inventory for bundles?

Yes, inventory is automatically synced and individual product SKUs appear in orders, making fulfillment straightforward.

Does it match my store theme?

Yes, Sumi automatically matches your store theme styling so bundles look native to your store without manual design work.