Bundle builder for Shopify

Shoppers build the box.
You set the rewards.

BigBox puts a build-your-own-box builder on your Shopify store. Every item a shopper adds moves them closer to a discount, a free gift, or free shipping.

7-day free trial · Free on development stores

Your storeCart

Build your box

Pick 3 to 6 items

Cold Brew Concentrate

Cold Brew Concentrate

$18.99

Toasted Coconut Granola

Toasted Coconut Granola

$14.99

Dark Chocolate Almonds

Dark Chocolate Almonds

$12.99

Oat Protein Bites

Oat Protein Bites

$15.99

Lemon Electrolyte Mix

Lemon Electrolyte Mix

$16.99

Hibiscus Tea Concentrate

Hibiscus Tea Concentrate

$17.99

Your box

0/6

Add 3 more to unlock 10% off

  1. 10% off3 items
  2. Free gift4 items
  3. Free shipping6 items

Choose products to start your box.

Estimated total
$0.00

Live demo. Click any product to fill the box.

  • No theme code

    An app block you place from the theme editor.

  • Shopify Functions

    Rewards apply natively at checkout.

  • Real cart lines

    Inventory and fulfillment stay untouched.

  • Cached storefront

    Box data served fast, eligibility checked live.

Live in three steps, without touching theme code.

These are the same steps the BigBox setup guide walks you through, and it checks each one off as you go.

  1. 01

    Create your first box

    Pick the products or collections shoppers choose from, set the box size, and add rewards for bigger boxes.

  2. 02

    Put it on your store

    Add the Build a box block in the theme editor, on a product page, your home page, or a landing page.

  3. 03

    Match your brand

    Set colors, corners, type sizes, and every line of copy, so the box looks like it shipped with your theme.

Rewards

Every item brings the next reward closer.

Stack reward tiers on box size. Each one unlocks a percentage or fixed discount, a free gift, or free shipping, and Shopify Functions apply it at checkout.

4 of 6

In your admin

RewardsAdd reward
3itemsDiscount10%
Checkout messageBox saver: 10% off
4itemsFree gift
Checkout messageFree electrolyte mix
6itemsFree shipping
Checkout messageFull boxes ship free

On your storefront

Your box

4/6

Add 2 more to unlock Free shipping

  1. 10% off3 items
  2. Free gift4 items
  3. Free shipping6 items
Strawberry Electrolyte MixFREE

At checkout

Order summary

Subtotal · 4 items
$62.96
Box saver: 10% off
-$6.30
Free electrolyte mix
$16.99 Free
Shipping
$6.95
Total
$63.61
  • Percentage or fixed. Take a percentage off every box item, or a fixed amount off the whole box.
  • Gifts join the cart. A reached gift is added automatically and discounted to free. If it comes in variants, shoppers pick one.
  • Your words at checkout. Each tier carries its own checkout message.

Fits your theme, not the other way around.

Show the box inline or in a slide-in drawer, then set colors, corners, type sizes, and every line of copy. Fonts come from your theme, and the admin previews each change live.

Try it on a store theme
Display mode
Trigger placement
  • Fonts follow your theme, so the box never looks bolted on.
  • Almost every label and message is editable, in your store's voice.
  • Confetti when a tier unlocks, if you want it.
  • After adding: go to cart, go to checkout, or stay put.

You decide what goes in, who sees it, and when.

Every box is one set of rules, edited in one place inside your Shopify admin.

Products or whole collections

Hand-pick products and the variants they come in, or pull in entire collections. Sold-out items can hide themselves.

A box size that sells

Set a minimum and a maximum. Shoppers see the empty slots they still need to fill.

The right shoppers

Everyone, chosen customers, customers whose tags match any or all of a list, or specific markets.

On your schedule

Start and end dates in your store's time zone, for launches and holiday drops.

Anywhere on your store

Point a block at the box's handle, or attach parent products so the block on their product pages finds the box by itself.

Plays nice with promos

Choose which of your other discounts can combine with box rewards.

One page, the whole offer

The editor sums up every rule as you go, previews the box in your storefront's styling, and duplicates it when the next drop comes around.

Native to Shopify, from cart to order.

No hidden bundle product and no discount codes. Every pick is a real cart line, rewards run on Shopify Functions, and each paid order traces back to its box.

  1. In the cart

    Your cart · 7 items

    • Cold Brew Concentrate_bigbox_bundle: Holiday box×2
    • Toasted Coconut Granola×1
    • Dark Chocolate Almonds×1
    • Lemon Electrolyte Mix×1
    • Oat Protein Bites×1
    • Strawberry Electrolyte Mix_bigbox_free_gift: tier-2×1

    Each item is its own line, tagged to its box.

  2. At checkout

    Order summary

    Items (7)
    $115.93
    Box saver: 10% off
    -$9.89
    Free electrolyte mix
    -$16.99
    Shipping · Full boxes ship free
    Free
    Total
    $89.05

    Applied by Shopify Functions, with your checkout messages.

  3. In your reports

    Order #1268

    Paid
    Box
    Holiday box
    Boxes purchased
    +1
    Items in the box
    6 + gift
    Net box sales
    +$89.05
    Realized savings
    +$26.88

    Recomputed from the paid Shopify order.

  • Discount health checks

    The editor flags a missing or inactive discount and recreates it in one click. Discount webhooks try to recover it automatically.

  • No colliding offers

    Two active boxes can't claim the same product for the same shoppers. BigBox blocks it before it goes live.

  • No theme code

    It is an app block you place in the theme editor, so your theme files stay untouched.

  • Inventory stays honest

    Real cart lines mean stock counts, fulfillment, and 3PL flows see exactly what sold.

  • Fast, cached storefront

    Box data is served from an edge cache, while schedule, market, and customer checks stay live.

  • Accessible by default

    Keyboard support, focus handling in the drawer, screen reader announcements, and reduced motion respected.

See which boxes sell, and what goes in them.

Follow every box from view to purchase. Sales are recomputed from paid Shopify orders, so the numbers reflect money that actually came in.

  • Storefront funnel. Eligible views, drawer opens, and cart additions, per box.
  • Paid outcomes. Net sales, AOV, and realized savings from real orders.
  • What goes in. The products and variants shoppers pick, add, and buy.

Pricing

Simple plans, priced by bundles.

Start free on a development store, then pick a plan when you go live. Both paid plans include a 7-day free trial, and yearly billing saves around 17%.

Development

Free

Development stores only

Build and test BigBox on a Shopify development store, completely free.

  • Every BigBox feature
  • Unlimited test bundles
  • Inline or drawer display
  • Full storefront customization
  • Development stores only, not live selling
Start building

Starter

$14.99/mo

7-day free trial

or $149.99 billed yearly

For a single, focused bundle builder on your best product page.

  • One active bundle
  • Discount, free gift & free-shipping tiers
  • Inline or drawer display
  • Full storefront customization
  • Funnel & paid-order analytics
Start free trial

Straight answers before you install.

Everything else is in the help center, and thetutorial walks through a full setup.

Do I need to edit my theme code?

No manual theme-code edits. You add the BigBox app block to your product template from the Shopify theme editor, and the app home page deep-links you straight to it.

How do the discounts actually apply?

Through Shopify automatic app discounts and Shopify Functions, using Shopify-resolved product, variant, customer, and market context. The discount applies at checkout whenever the cart qualifies.

Are bundle items real cart lines?

Yes. Selected items are added as real Shopify cart lines with BigBox attribution properties - there's no separate bundle product to create or keep in inventory sync.

How is order revenue attributed to a bundle?

Paid-order analytics are recomputed from Shopify orders after order webhooks, for orders that retain BigBox line item properties. It reflects paid outcomes rather than live, real-time numbers.

How do free gift tiers work?

A tier's reward can be a free gift: one product you pick. When a shopper reaches the tier, the gift is added to their cart automatically and discounted to free at checkout through Shopify Functions. If the gift has several variants, the shopper chooses one before adding the box, and gift items never count toward tier progress.

Can two offers collide on the same product?

No. BigBox blocks conflicting active bundles on overlapping active products when their eligibility scopes overlap, so one product page never serves two competing offers.

What happens if a connected discount breaks?

The bundle editor checks whether the connected Shopify discount exists and is active. If it's missing, expired, or invalid, you get a one-click repair, and discount webhooks attempt recovery automatically.

Give your product pages a box worth building.

Add BigBox, drop in the app block, and let shoppers assemble their own box - rewards and analytics included.

7-day free trial · Free on development stores