Shopify App Comparison 2026
FBP | Fast Bundle Product
XB: Free Gifts & Buy X Get Y
Which Shopify upsell app increases AOV more? Compare pricing, features, ratings & real merchant reviews for FBP and XB: Free Gifts & Buy X Get Y to find the best fit for your store.
Build product bundles quickly with mix-and-match, volume discounts, and frequently bought together offers.
View Full DetailsKey Features
- Multiple bundle types including fixed, mix-and-match, frequently bought together, and subscription bundles
- Real-time inventory sync ensuring bundles never oversell individual products
- Customizable bundle widget with drag-and-drop layout builder
- Subscription bundle support for recurring revenue streams
- Seamless integration with Shopify checkout and discount system
Verdict on FBP
Fast Bundle earns its perfect 5.0 rating by delivering a polished, fast, and reliable bundling experience. Its inventory sync feature is a standout, preventing the overselling issues that plague some competing apps. The subscription bundle capability on the Growth plan also makes it a strong choice for stores building recurring revenue. If you need a versatile, well-built bundle app, Fast Bundle belongs on your shortlist.
Create bundles with Buy X Get Y, free gifts, BOGO deals, and auto-applied discounts. Zero-coding setup with customizable templates.
View Full DetailsKey Features
- Auto-add free gifts to cart when promotion conditions are met
- Buy X Get Y and BOGO deal configuration with flexible rules
- Auto-apply discount codes for seamless customer experience
- Multiple customizable layout templates matching store branding
- Bundle discounts for increased cart value with zero-coding setup
Verdict on XB:
XB is a simple, free, and Built for Shopify-certified app for stores that just want BOGO and free gift promotions without complexity. With only 4 reviews it is very early stage, but the Built for Shopify badge and completely free pricing make it zero-risk to try. Best for merchants who want a lightweight promotion tool rather than a full bundle builder.
Frequently Asked Questions
Does Fast Bundle sync with Shopify inventory?
Yes, Fast Bundle includes real-time inventory synchronization that tracks individual product stock levels within bundles. When a component product sells out, the bundle is automatically marked as unavailable, preventing overselling.
Can I create subscription bundles?
Yes, the Growth plan at $19.99/month supports subscription bundles. Customers can subscribe to receive a bundle on a recurring basis, helping you build predictable recurring revenue.
What types of bundles can I create?
Fast Bundle supports fixed bundles, mix-and-match bundles, frequently bought together offers, volume discount bundles, and subscription bundles. The Starter plan unlocks most bundle types, with subscription bundles available on the Growth plan.
Is XB free?
Yes, XB is completely free with all features included. There are no paid plans or hidden costs.
How do auto-add free gifts work?
When a customer meets the promotion conditions (e.g., buys Product A), the free gift is automatically added to their cart without any action required from the customer.