Quick answer
Top FBT apps let merchants set trigger PDPs, choose add-ons with variant rules, discount add-ons only or all selected items, and attribute revenue to the FBT offer — with mobile-friendly card or checkbox layouts.
- Curated FBT beats generic feeds.
- addons_only protects margin.
- Pre-select add-ons for speed.
- One FBT per PDP after priority.
Choosing trigger products
Start with SKUs that already sell — hero serum, best-selling bag, core tool. FBT attaches accessories shoppers forget to add.
Discount strategy for FBT
addons_only preserves hero margin while nudging add-ons. Default 10% on add-ons is common; test pre-selected boxes for faster discount visibility.
Coexistence with fixed kits
Inline fixed kit on the same PDP may hide FBT — configure show_below or prioritize one offer type per hero SKU.
Measuring FBT
Kitforge analytics and _kitforge_fbt_* line properties tie orders to offers. Compare attach rate week over week, not just bundle revenue.
Final recommendation
Best FBT apps reflect how your customers already pair products — Kitforge FBT is built for merchant-curated add-ons.
If you want this kind of offer to feel native to the buying journey, Kitforge Bundles is built around that exact problem: turning related Shopify products into clearer bundle offers before the shopper reaches checkout.
FAQ
Multiple FBT offers one page?
One winning FBT per PDP after offer priority sort.
FBT with variants?
Per-add-on variant selectors when SKUs have multiple variants.