Shopify App Comparison 2026

Sumi: Full Page Bundle Builder

5.07 reviews
VS

ZenBox: Bundle Builder

4.0119 reviews

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

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

View Full Details

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.

Increase AOV by letting customers create custom bundles with flexible pricing and discounts.

View Full Details

Key Features

  • Adjustable pricing and discount structures for bundles
  • Customer filtering by product titles in each builder step
  • Layered discounts compatible with other Shopify discounts
  • Two customizable builder layouts with infinite styling options
  • Forms for text input and image uploads for personalization

Verdict on ZenBox:

ZenBox has 119 reviews, making it one of the more established bundle builders. The 4.0 rating is average but reflects honest feedback across a large user base. The image upload and text input features are useful for personalized gift boxes. At $24.99/month with no free plan, it requires commitment.

Frequently Asked Questions

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.

Can customers upload images for gift boxes?

Yes, ZenBox supports custom forms with text input and image uploads, making it ideal for personalized gift box builders.

Do bundle discounts stack with Shopify discounts?

Yes, ZenBox creates layered discounts that are compatible with other Shopify discounts, so they can stack.