Bundles are one of the few levers an owner-operator can pull this week. Paid traffic keeps getting more expensive, and the fastest way to make the ad spend work is to raise AOV on the traffic you already paid for. The four apps below are the ones most small merchants are actually choosing between in 2026, and the right pick depends more on your bundle strategy and your tolerance for revenue-capped pricing than on star ratings.
Who this is for
This guide is written for owner-operators and 1-4 person DTC teams on Shopify, roughly under 1,000 orders a month. If you’re running a larger store with a full merchandising team, you’re probably already evaluating Rebuy or Amplify (formerly PickyStory), and the bundle question is only part of a bigger personalization stack.
Our pick: Kaching Bundles App & Upsells
Kaching is the app we’d install first on a small DTC store that wants bundles doing visible work on the product page.
Its Starter plan is $14.99 a month (or $131.88 a year, a 27% saving) for up to $1,000 of additional revenue, Scale is $29.99 for up to $5,000, and Pro is $59.99 for up to $10,000.
The app carries a 5.0 star rating across more than 6,000 reviews,
and it meets Shopify’s highest standards for performance, design, and integration (the Built for Shopify badge) and is free to install.
Here’s why it wins for small stores: the pricing model only moves when you earn it.
Kaching counts “additional revenue” the app attributes to itself, so the Starter tier covers a quiet month and the Scale tier arrives after bundles are already paying for themselves. A/B testing is included on every plan, which is unusual at this entry price. The ceilings are real, though. The Pro tier at $59.99 caps at $10,000 of additional attributed revenue a month, so a strong Black Friday can push you up the ladder fast. Budget for a peak month, not an average one.
The main trade-off is scope.
Upsells appear on the product page and in the cart; there’s no native post-purchase or checkout-extension upsell in this app.
If post-purchase funnels are a core part of your merchandising plan, pair it with a thank-you-page tool or look at Fast Bundle instead.
The runner-up for offer variety: Fast Bundle
If one app has to run several offer types at once, Fast Bundle is worth a look. Listed on the Shopify App Store as FBP | Fast Bundle & Upsell App, it’s positioned as a bundle builder covering product bundles, upsell, and BOGO offers, and holds a 5.0 rating across more than 3,500 reviews. It’s free to install, per the listing card.
Because the full listing wasn’t captured in our source fetch for this update, confirm the current pricing tiers, caps, and offer-type coverage on the App Store page before installing. If pricing on this category is a concern, Kaching’s attributed-revenue tiers are documented on its listing and are the easier number to budget against.
If operations are the problem: Simple Bundles & Kits
Not every bundle problem is a merchandising problem. If you ship kits out of a 3PL, use Shopify POS in multiple locations, or need bundle orders broken down into the component SKUs a warehouse actually picks, Simple Bundles & Kits is the one worth paying for.
It holds a 4.9-star rating across more than 800 reviews and carries the Built for Shopify badge. It breaks every bundle into individual SKUs for fulfillment, syncs inventory in real time across POS and headless storefronts, and handles complex mix-and-match setups with unlimited variants.
The pricing is also the most predictable in the roundup, because it isn’t metered by app-attributed revenue.
The free plan covers 3 bundles and 50 monthly orders with all bundle types, automatic SKU breakdown, bundle sales analytics, AI bundle suggestions from order history, and BYOB. Basic is $14 a month (or $140 a year, a 17% saving) with unlimited bundles, bulk import, dynamic bundle pricing, and single-location POS. Grow & Advanced is $39 a month with custom bundle order metafields, advanced order processing rules, unlimited-location POS, and Shopify Flow support. Plus is $149 a month with headless storefront support and 24/7 priority support.
The free tier is tight (three bundles and fifty orders disappears quickly) but it’s enough to validate the idea before you commit to Basic.
The main thing you don’t get: a dedicated product-page quantity-break widget with A/B testing framed the way Kaching frames it. If your main lever is “buy 3, save 15%” on the product page, pair this with Kaching or just pick Kaching on its own.
The budget pick: Bundler
Bundler is the only app in the roundup with a free plan that doesn’t cap revenue or orders.
Its free tier includes unlimited revenue and orders, Buy X Get Y, volume discounts and quantity breaks, flexible volume conditions, flexible discounts, product-page upsells, Shopify POS, and auto-apply discounts.
The paid tiers are flat and cheap:
Premium at $9.99 a month and Executive at $19.99 a month, both with a 7-day free trial.
Premium adds Mix & Match, Tiered Mix & Match, Sectioned Mix & Match, Quantity Break combinations, Custom landing pages, Free shipping, and Funnel upsells;
Executive adds the bundle analytics the lower tiers lack. The rating is strong at
4.9 across 2,737 reviews.
Where it falls short is reporting and operations.
There’s no SKU-level breakdown or fulfillment logic, so skip it if you run a 3PL or WMS. Reporting and customization are thin next to the bigger apps.
On the merchandising side, mix-and-match is a paid feature, not a free-plan one. Still, if the question is “can I test bundles this week for free,” Bundler is the honest answer.
How to choose
The decision tree for a small DTC store:
- Just want “buy 2, save 10%” on the product page with A/B testing? Kaching, Starter plan.
- Need several offer types (mix-and-match, BOGO, free gift) in one app? Fast Bundle, after confirming current pricing on the App Store listing.
- Shipping real kits from a 3PL or using multi-location POS? Simple Bundles & Kits.
- Testing bundling with zero budget? Bundler’s free plan, then upgrade to Premium at $9.99 if mix-and-match earns its place.
Bundles are one piece of a wider on-site conversion stack. If your bigger problem is picking the right products to put together in the first place, our guide to AI product recommendation apps for small Shopify DTC stores covers the tools that surface those combinations in the first place. If repeat purchase is the lever you’re trying to pull, the AI loyalty and rewards apps guide is a better starting point than a bundle app. And if you’re trying to rescue sessions that are about to leave without buying anything, the AI exit-intent popup apps guide is the companion piece to this one.
One more note: this is a desk evaluation of current listings and pricing pages, not a six-week test on live stores. Pricing in this category moves, and several apps have shifted to revenue-capped billing over the last year. We’ll re-run the rubric when the next pricing change lands.
