Best Shopify bundle apps: which one builds the bundles you sell?

At a glance

What is the best Shopify bundle app?

Eight of the best Shopify bundle apps, compared on six bundle kinds: fixed bundles, mix and match or build-your-own, volume discounts, Buy X Get Y, free gifts and add-ons. Prices assume $3,000 a month in bundle sales.

Or start from the problem in front of you.

Sledge comes first because it builds all six kinds, plus three more offer types, on a plan that is never a cut of bundle sales. Fast Bundle and Kaching build all six too, on bills that follow sales. The other five are ordered by the one job each does best. Amplify, at $99.50 a month, and Kitenzo Bundle Builder, which takes 1.5% of each bundle sale, sit outside the eight.

Bundle types

Which bundle types does each app build?

Run quantity breaks today and a free gift at the holidays, and you want both in one app. A second app can mean a second offer on the same product page.

"Not listed" means the App Store listing doesn't name it, so ask the developer before you rule it out. Kaching's mix and match, Buy X Get Y and add-ons come from its own pricing page.

Product or offer

Do you need a bundle product or a bundle offer?

You sell each item alone and in a kit, and the kit's stock count keeps drifting. Which fix works depends on how the app builds the bundle.

A bundle product is its own product, with its own SKU. Shopify Bundles and Simple Bundles make them, and so does Fast Bundle's "Bundle as product" option. Shopify sets its stock from the scarcest item: each item's stock divided by how many the bundle needs, rounded down. In the order, it shows as one group with each item under it.

A bundle offer discounts items the shopper adds as their own cart lines, so each item keeps its own stock and SKU. Sledge works this way and makes no separate bundle product. Ask any other app how it adds the items before you install it.

Each kind has a catch. Under Shopify's bundle rules, a bundle product sells out when its scarcest item does, can't carry a subscription or a pre-order, and has to be made again if one item's SKU changes. Here's why a bundle shows sold out while its items are in stock. A bundle offer gives your warehouse no kit SKU, so a 3PL that picks kits by one SKU needs a bundle product.

1 · Sledge

Sledge: can one app run every bundle type?

The offer on your product page misses every shopper who never opens that page. Sledge runs nine offer types in one app: fixed bundles, Buy X Get Y, volume discounts, add-ons, build-your-own, subscription, shipping, free gift, and the thank-you page offer.

Fixed bundles, Buy X Get Y and volume discounts can show on collection pages, on the search results page and in instant search, as well as on the product page. Free gift, subscription and shipping offers show in the cart drawer and on the cart page too. A build-your-own bundle gets a page of its own, and the thank-you page offer shows on the order confirmation page.

A fixed bundle takes a percentage or a fixed amount off the set, and volume tiers do the same by quantity. Buy X Get Y gives the Y items free, such as buy 2 get 1 free. A free gift runs on one goal per campaign: a minimum quantity or a minimum purchase.

The saving applies on its own at checkout, with no code to type, and combines with other discounts where Shopify's rules allow. A fixed bundle, a Buy X Get Y or a volume discount can also launch as a pre-order, with a deposit where your payment provider and country support it.

Any offer can run as an A/B test, and you keep the winner. Each offer shows its visitors, clicks and total revenue, and every type except build-your-own shows "Extra rev.", the extra revenue it brought.

Every offer type comes with every paid plan: Pro $29.99, Scale $89.99, Accelerate $199 and Ultimate $399 a month, side by side on Sledge pricing. Start the 14-day free trial and build your first bundle on your own products.

Sledge's gaps: 17 reviews, against thousands for Kaching, BOGOS and Fast Bundle. No free plan for a live store, and the trial runs one active offer of each type. No kit SKU for a warehouse to pick. And the App Store lists it as "Sledge Product Filter & Search", so look for that name.

Best for: all six bundle kinds in one app, with search, filters and reviews on the same bill.

2 · Fast Bundle

Fast Bundle: how far does a bundle-only app go?

You need a bundle app and nothing else, with every common kind in one place. Fast Bundle builds all six kinds in the table, plus frequently bought together picks chosen by AI, and can make a bundle that is its own product, which Sledge does not.

Standard costs $19 a month up to $1,000 of monthly bundle sales, $49 up to $3,000 and $139 up to $10,000, after a 7-day free trial. Above $10,000 the price shows only inside the app, and Auto Bundle Detection costs $49 a month more.

The catch is that meter: past $3,000, Fast Bundle's own page says to upgrade to the $139 plan to keep your bundles running without a break. The free plan is for development stores, the listing has no Built for Shopify badge, and search, filters and reviews are separate apps.

Best for: a bundle-only app with every common bundle kind.

3 · Kaching Bundles

Kaching Bundles: are quantity breaks all you need?

You want the Buy 1, Buy 2, Buy 3 card shoppers already know. Kaching Bundles is built around it, with discounts as a percentage, a dollar amount or a set price, built-in A/B testing and a dashboard of additional revenue. It also works with Shopify POS.

Kaching's own pricing page adds mix and match, build-your-own boxes, Buy X Get Y, free gifts and add-ons, with every feature on every plan. Its listing has the most reviews of the eight.

Starter costs $14.99 a month up to $1,000 of additional revenue, Scale $29.99 up to $5,000 and Pro $59.99 up to $10,000, after a 7-day free trial. Its own site continues to $299 past $50,000. Development stores test free; live stores get no free plan.

Neither page defines "added revenue", so your bill moves with whatever the app counts. For tier cards side by side, see five volume discount apps compared, and if you're leaving, four Kaching Bundles alternatives.

Best for: a quantity-break card as your main offer.

4 · Bundler

Bundler: is a free bundle app enough?

You want bundles for $0, and a bill that stays put as sales grow. Bundler's free plan has no cap on revenue or orders. It runs Buy X Get Y, volume discounts and quantity breaks, product page upsells and discounts that apply on their own, and works with Shopify POS.

Premium, at $9.99 a month, adds mix and match, landing pages, free shipping and funnel upsells. Executive, at $19.99, adds bundle reports on revenue, average order value and conversions. Paid plans put no limit on revenue and carry a 7-day free trial. Bundler also works with subscription products.

The catch: mix and match waits for Premium, and the bundle reports for Executive.

Best for: the tightest budget.

5 · Shopify Bundles

Shopify Bundles: when is Shopify's free app enough?

Your kits never change, and you'd rather not pay an app to sell them. Shopify Bundles is free on every plan and makes fixed bundles and multipacks from your admin, with a size or color choice for each item and stock updated as you sell.

Shopify Bundles makes no mix and match bundles, BOGO offers or free gifts. A bundle holds up to 30 items, 3 options and 100 variants, so two T-shirts in several styles and sizes can pass the cap. Its bundles can't carry subscriptions or pre-orders, and their price stays put when an item's price changes.

Stock is one total, not tracked by location, and bundled products don't show under option filters in Search & Discovery. To set one up, see how to create and price product bundles on Shopify.

Best for: fixed sets and multipacks with simple variants.

6 · Simple Bundles

Simple Bundles: does your warehouse need each kit item?

Your warehouse picks each item in a kit, and your stock count has to stay right. Simple Bundles & Kits breaks each bundle into its items for fulfillment, and syncs single and multi-SKU stock with your 3PL and warehouse software.

It makes bundles, kits, multipacks, BOGO, volume discounts, mix and match and build-your-own boxes. The free plan covers every bundle type for 3 bundles and 50 monthly orders, with AI bundle suggestions from your order history.

Basic costs $24 a month on Shopify Basic, or $14 for stores under 100 monthly orders. Grow and Advanced stores pay $39, Plus stores $149, and the listing shows no free trial.

Read the allowance closely: every order your store takes counts toward it, not only bundle orders.

Best for: kits that ship through a 3PL or warehouse.

7 · Easy Bundles

Easy Bundles: should shoppers build the box?

You want shoppers to build their own pack, with a better price at 3 or 5 items. Easy Bundles builds single and multi-step build-your-own pages and build-a-box pages, plus fixed-price bundles, quantity breaks, Buy X Get Y, free gifts, add-ons and subscription bundles.

A bundle builder app lets the shopper choose each item in the set, step by step, a form of mix and match. Free covers up to $500 of bundle sales a month. Essential costs $29 up to $3,000 and adds the builder, Growth costs $49 up to $5,000 and adds add-ons, free gifts and subscription bundles, and Scale costs $99 up to $10,000, after a 15-day free trial.

On Shopify Advanced or Plus, you can't use Free or Essential. Stock syncs across Shopify and your 3PL, and Easy Bundles works with Shopify POS. For more box builders, see six build-your-own bundle apps compared.

Best for: build-your-own boxes and gift boxes.

8 · BOGOS

BOGOS: is your offer a free gift?

Your offer is a free gift or a buy one get one, and shoppers forget to add the free item. Shopify's own Buy X Get Y discount never adds it for them. BOGOS does, straight to the cart or through a gift popup.

It also runs bundles, build a box, mix and match, volume discounts, a checkout upsell and a thank-you page offer. To try a gift by hand first, see the free gift with purchase setup guide.

The free plan covers 30 orders in total. Basic costs $29.99 a month for 300 monthly orders on Shopify Basic, then $0.05 an order, and adds build a box. Grow costs $49.99 for 600 orders, and Plus, for Shopify Plus stores only, costs $109.99 for 2,000 with the checkout upsell, after a 7-day free trial.

The catch: at 60 bundle orders a month, the free plan's 30 run out in the first month, and the listing doesn't say which orders count toward each allowance.

Best for: free gift and BOGO campaigns.

The monthly bill

What does a bundle app cost as bundle sales grow?

Your bill moved again this month, because it follows what the app says it earned. Bundle apps charge on four meters: a monthly plan (Sledge, Bundler), the revenue the app counts (Kaching, Fast Bundle, Easy Bundles), orders (BOGOS, Simple Bundles), or nothing at all (Shopify Bundles).

Say your store is on Shopify Basic and sells $3,000 of bundles a month: about 60 bundle orders at $50, out of more than 100 orders in all.

Kaching's figure is a ceiling: if it counts $1,000 or less, Starter at $14.99 covers you.

Sledge's price is never a cut of bundle sales. Each month, Sledge counts the sales that come through its search, recommendations and offers together. Past Pro's $8,000, AI features such as Growth Intelligence pause until the month resets, and bundles keep running.

Where to start

Which bundle should you build first?

Say your $32 shampoo and $28 conditioner keep landing in the same orders. On any paid plan, Growth Intelligence can name that pair and add the bundle to your one "Est. potential" total, and "Create Bundle" opens it filled in. Once it is live, "Extra rev." shows what it earned.

Growth Intelligence also suggests a volume discount when orders often hold several items, and an A/B test when two or more offers run untested.