An honest comparison, written by someone who sells one of them — including what we could not verify.
Declare the bias up front. We make Choosebox, one of the apps in this category. So read this knowing that. Two things we've done to make it worth reading anyway: every claim below comes from a vendor's own documentation or App Store listing, never from a competitor's blog roundup — and where we couldn't verify something, it says unverified rather than a guess.
Almost every "best bundle apps" article ranking for this query is published by a bundle app vendor. That doesn't make them worthless, but it does mean the winner is known before you start reading.
The more useful thing we can offer isn't a ranking. It's the questions that actually separate these apps, because once you know those you can evaluate any of them — including ours — in about ten minutes.
Three glazed, two chocolate, one jelly. This is quantity per option, and it is a different feature from "pick six different things."
It is also, by a distance, the least documented thing in this category. When we went through the public documentation of every major app, only Bundler stated it unambiguously — its FAQ describes setting a maximum allowed quantity per product above one. Amplify (formerly PickyStory) documents configurable per-item minimum and maximum quantities, which strongly implies it. For everyone else the documentation simply doesn't say.
If you sell doughnuts, cans, cupcakes or anything where people want three of the good one, ask this before you pay, and don't accept "yes we do mix and match" as the answer.
If it doesn't, you've bought a nicer interface for a spreadsheet.
Documented clearly by Shopify Bundles, Simple Bundles and Amplify. Inherently true for Bundler, which never creates a bundle product at all — it discounts real products, so stock can't drift. Several other apps don't address it in public documentation, which isn't evidence against them; it's just something you have to ask.
"Any 6 for £30" and "6 items, 20% off" are different products with different economics. Some apps do both; most listings claim both. Only a couple state it in plain prose rather than a feature checkbox.
The customer builds a box, gets distracted, comes back and checks out. Item three is gone.
Shopify's own documentation is candid about this for shopper-built bundles: components are checked at cart and checkout — so a true oversell is blocked — but apps must maintain their own inventory logic on storefronts. In plain English, the product page can still show something as available after it's sold out unless the app does that work itself.
Make any vendor describe the actual screen the customer sees.
The express checkout button skips the cart entirely, and it's where these implementations quietly fail. We found no authoritative documentation for any app on this, ours included. It's a five-minute test on a dev store, and worth doing before you commit.
These come from Shopify's own documentation, so they constrain everybody equally.
Sourced only from each vendor's own documentation and App Store listing. Pricing changes — check before relying on it.
| App | Customer picks? | Multiples of one item | Component inventory | Entry cost |
|---|---|---|---|---|
| Shopify Bundles First-party |
No — fixed bundles and multipacks only | Merchant-defined pack sizes | Yes, documented | Free |
| Bundler | Yes | Yes — explicitly documented | Yes, inherently — no bundle SKU is created | Free plan; mix-and-match on paid tier from ~$9.99/mo |
| Simple Bundles & Kits | Yes | Unverified — documented pattern is merchant-defined pack sizes | Yes, well documented | Free tier (3 bundles / 50 orders); paid from ~$14/mo |
| Amplify formerly PickyStory |
Yes — documented BYOB flows | Per-item min/max documented; multiples implied | Yes, documented | No free tier; from ~$99.50/mo |
| Fast Bundle | Yes | Unverified | Unverified | No free tier for live stores; from ~$19/mo, revenue-capped |
| BOGOS | Yes — mix-and-match documented | Unverified | Unverified | Free for 30 orders lifetime; paid from ~$29.99/mo |
| Rebuy | Yes — Bundle Builder | Unverified | Unverified; discloses Cart Transform use | From ~$25/mo, scales with orders |
| Appstle Bundles | Claimed in marketing; no public docs found | Unverified | Unverified | Free up to ~$750/mo bundle sales; from ~$7.99/mo |
| Bundly | Yes | Unverified | Real-time per product, per listing | No free tier; from ~$29/mo. States plainly it isn't compatible with POS or subscription apps |
| Choosebox ours |
Yes | Yes | Yes — components stay real products | Free tier; see pricing |
Unverified means the vendor's public documentation didn't address it — not that the app can't do it. Several of these probably can. Ask them.
A comparison that concludes "us" every time is an advertisement. Here's where we honestly aren't the answer:
That last step catches almost everything. An app can look perfect right up until you read the order and find the contents aren't on it.
Sourcing note. Every factual claim here comes from Shopify's own documentation or from the named vendor's App Store listing and help centre. We deliberately excluded "best bundle app" roundups published by competing vendors, since those are marketing. If we've got something wrong about your app, email support@dropfeed.io and we'll correct it.
Sources: Shopify — product bundles · Bundle eligibility and considerations · Customized bundles · Shopify Bundles · Bundler FAQ · Simple Bundles inventory · Amplify docs · Rebuy widget types · BOGOS docs
Related: Let customers choose flavors · Any 6 for a fixed price · Quantity per flavour