Cart & Upsells · Bundles
Every bundle type. One feature. A/B testing and targeting built in.
Quantity, mixed-product, and build-your-own bundles, all in one place. Audience targeting shows the right bundle to the right segment. Native A/B testing finds what actually lifts AOV.
What it does
Bundles that actually convert. Configurations you can test and target.
Every bundle type out of the box
Quantity bundles (buy 3 get 15% off), mixed-product bundles (curated sets at a bundle price), and custom-builder bundles where shoppers pick their own items via multi-step, tabbed, or accordion layouts. One feature, every pattern, no extra apps.
Audience targeting per bundle
Show wholesale customers a different bundle than retail. Show first-time visitors a starter pack, returning customers an upgrade kit. Drive bundle relevance through the same targeting tree that powers the rest of Spectrum, with nine operators across customer tags, UTM, cart value, geo, and more.
Native A/B experimentation
Test discount tiers, bundle compositions, layouts, and pricing models against conversion. Studio runs the experiment end to end. Find the configuration that actually lifts AOV per segment instead of guessing.
Managed cart state
Spectrum manages the bundle cart natively: progress tracking, auto-discount application, clean checkout integration. No brittle cart-drawer JS injection that breaks on theme updates.
Metaobject-backed configuration
Bundle config publishes to Shopify metaobjects with KV caching for fast storefront resolution. Your bundles render at theme speed, not vendor-sandbox speed.
Why it matters
Most bundle apps charge more as your bundles work. Spectrum does the opposite.
All-in-one
Every bundle type, one feature
Quantity, mixed-product, and build-your-own. Most competitor apps support one or two; you install separate apps for the rest.
Spectrum capability surface
0
Revenue caps on the free tier
Competitors cap revenue at $300 to $1,000 on entry tiers, then push you to expensive plans as bundles perform. Spectrum does not meter bundle revenue.
Kaching and Pumper pricing pages
2–4 wks
Saved on Rebuy-style setup
Rebuy users report two to four weeks to configure rules, data sources, and widgets, with advanced features locked to Shopify Plus. Spectrum is ready on day one of the pilot.
Rebuy reviews + pricing page
Every bundle pattern, shipped as a configurable widget.
Quantity, mixed, custom. Every pattern ships as a configurable widget with managed cart state and metaobject-backed publishing, so bundles render at theme speed on the storefront.
Quantity bundle builder
LiveBuy-X-get-Y, tiered discount thresholds, fixed bundle prices. Inventory deducts from component SKUs cleanly. Works at variant level for products with 80+ variants.
Mixed-product bundle builder
LiveCurated sets at a bundle price. Pick the constituent products, set the bundle discount, ship a single storefront widget that handles cart composition and discount application.
Custom-builder bundle widget
LiveShoppers build their own bundle from a curated catalog via multi-step, tabbed, or accordion layouts. Progress tracking, real-time price calculation, managed cart state.
Built for
Catalogs where AOV is the lever and bundles are the mechanic.
Apparel & Fashion
Outfit bundles, capsule wardrobes, build-your-own sets. Variant-level inventory so the 80-variant SKU does not break the bundle UI. Different bundles for different audience segments without a second app install.
Beauty & Personal Care
Routine builders, gift sets, sample-to-full-size upsells. Curate ingredient sets into ready-made bundles, and test multiple discount tiers per segment.
Multi-product brands
Quantity discounts on the bestseller, mixed-product bundles for the cross-sell, custom-builder for the curious. One feature covers them all. Inventory deducts correctly, even at variant scale.
Subscription and DTC
Starter packs for first-time buyers, replenishment bundles for returners, premium tiers for loyal segments. Audience targeting lets every customer see the bundle that matches where they are in the journey.
What it replaces
Kaching, Pumper, Bundler, Rebuy. One feature instead of four apps.
The bundle category is split across single-pattern apps, revenue-capped free tiers, and Plus-locked features. Spectrum ships every bundle type, audience targeting, and experimentation in one feature with no revenue caps.
FAQ
Questions, answered.
A few we hear most often. Want a deeper walk-through? Book a demo.
Talk to a humanWill bundles work on my high-variant products?
Yes. Variant-level handling is built in. Products with 80 or more variants are a known stress case in this category; competitor apps frequently break the UI or oversell. Spectrum handles them at variant scope, not at parent-SKU scope.
Does inventory deduct correctly from the component products?
Yes. Bundle composition routes through the same inventory system as standard line items, so component SKUs decrement on purchase. No phantom inventory; no overselling.
Can I show wholesale customers different bundles than retail?
Yes. Tag customers in Shopify, point the targeting tree at the tag, and configure separate bundle setups per segment. The retail experience is unchanged; the wholesale segment sees its own offers.
Can I A/B test bundle configurations?
Yes. Discount tiers, layouts, product mixes, and prices are all testable via Studio. Most competitor apps offer no experimentation at all; Kaching offers a basic version. Spectrum runs the experiment end to end and reports on conversion lift.
See bundles and A/B tests on your catalog.
A 20-minute walk-through. Real bundles on your products, real audience segments tested live.
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