Bundle & Kit Stock / Compare / checked Nov 2026
Simple Bundles alternatives, sorted by reviews
We build Kizing: Bundle & Kit Stock, one of the apps on this page. It is new, not yet on the Shopify App Store, with 0 reviews, so this list is sorted by each app's live App Store review count, not by our opinion, and ours comes last. We did not install the other apps; every fact below comes from their public listings, read on 8 November 2026.
First: is Simple Bundles already the right app?
Simple Bundles & Kits has 830 reviews and a 4.9 rating, has been on the App Store since March 2021, carries the Built for Shopify badge, and breaks each bundle into its component SKUs. Its free plan covers 3 bundles and 50 orders a month; Basic is $24 a month ($14 for stores under 100 orders), then $39 and $149. If it fits your store, staying is a sound choice. People usually look elsewhere because of pricing that rises with orders, or because they need a different kind of bundle.
This page lists apps whose job is keeping bundle stock tied to the products inside. Discount-bundle apps (quantity breaks, bundle offers) are a different job and aren't included.
The alternatives at a glance
| # | App | Reviews | Rating | Free plan | Paid from | Best when |
|---|---|---|---|---|---|---|
| 1 | Shopify Bundles | 569 | 2.9 | Free | — | Your bundles are simple and fixed |
| 2 | Trunk ‑ Stock Sync & Bundling | 409 | 4.9 | No (14-day trial) | $39 a month for bundling | You also sync stock across stores or channels |
| 3 | Bundles.app ‑ Inventory Sync | 324 | 4.9 | No (free trial) | $19 a month | You want unlimited bundles at a flat price |
| 4 | Bundle Kit ‑ Inventory Sync | 75 | 4.7 | No (free trial) | $21 a month | You want bundles that behave like normal products |
| 5 | Bundly • Mix & Match Bundles | 67 | 4.9 | No (free trial) | $29 a month | Shoppers build their own variety packs |
| 6 | Krunch Bundle & Inventory Sync | 5 | 5.0 | No (free trial) | $9 a month | You want low-cost two-way sync across locations |
| 7 | Kizing: Bundle & Kit Stock (ours) | 0 | — | Yes, 3 bundles | $14 a month | You want a free plan without an order cap |
Reviews, ratings and prices from each app's public Shopify App Store listing, read 8 November 2026.
The shortlist, app by app
1. Shopify Bundles
- Listing: apps.shopify.com/shopify-bundles · 2.9 from 569 reviews · on the App Store since July 2023 · made by Shopify
- Pricing: free.
- What stands out: Shopify's own app for fixed bundles and multipacks built from your products.
- Honest weakness: the lowest rating on this list, and its listing doesn't describe how component stock is handled across locations or channels.
- Who it is for: stores with a few simple bundles that want to try the free option first.
2. Trunk ‑ Stock Sync & Bundling
- Listing: apps.shopify.com/trunk · 4.9 from 409 reviews · on the App Store since August 2019 · no Built for Shopify badge
- Pricing: bundling and kitting come with Pro, from $39 a month and rising with monthly orders ($59 at 101–200 orders, $79 at 201–400); 14-day free trial.
- What stands out: real-time stock syncing across stores and channels, with bundles and kits in the same app.
- Honest weakness: no free plan, and the price grows with order volume.
- Who it is for: merchants who sell on several stores or channels and need bundles counted on all of them.
3. Bundles.app ‑ Inventory Sync
- Listing: apps.shopify.com/bundles · 4.9 from 324 reviews · on the App Store since March 2016 · no Built for Shopify badge
- Pricing: $19 a month for stores not on Shopify Plus, with unlimited bundles; Plus stores pay $39, $99 or $199 by monthly orders; free trial.
- What stands out: the longest track record here, and a flat $19 for unlimited bundles outside Plus.
- Honest weakness: no free plan.
- Who it is for: stores that want a long-running, flat-priced bundle stock app.
4. Bundle Kit ‑ Inventory Sync
- Listing: apps.shopify.com/bundle-kit · 4.7 from 75 reviews · on the App Store since June 2021 · Built for Shopify
- Pricing: Starter $21 a month (Shopify Basic), Business $45 (Grow and Advanced), Plus starter $89, Plus $149; unlimited bundles and orders; free trial.
- What stands out: bundles that work like regular products, with inventory, price and weight synced automatically.
- Honest weakness: no free plan, and the price follows your Shopify plan.
- Who it is for: stores that want each bundle to act like an ordinary product, with its stock, price and weight kept in step.
5. Bundly • Mix & Match Bundles
- Listing: apps.shopify.com/bundly · 4.9 from 67 reviews · on the App Store since July 2023 · Built for Shopify
- Pricing: Basic $29, Standard $59 a month; unlimited orders; free trial.
- What stands out: shoppers build variety packs, boxes and gift sets from your flavours, scents or shades, with stock tracked per product.
- Honest weakness: the highest entry price here, and it is built for mix-and-match rather than fixed kits.
- Who it is for: brands selling build-your-own packs.
6. Krunch Bundle & Inventory Sync
- Listing: apps.shopify.com/bundles-inventory-sync · 5.0 from 5 reviews · on the App Store since October 2025 · no Built for Shopify badge
- Pricing: Pro $9 a month, unlimited bundles and orders; free trial.
- What stands out: two-way, real-time sync of bundle and component stock across locations, including refunds and returns.
- Honest weakness: five reviews and about a year on the App Store; little track record.
- Who it is for: stores that want the cheapest paid option with multi-location support.
7. Kizing: Bundle & Kit Stock (ours)
- Listing: not yet on the Shopify App Store (November 2026); 0 reviews.
- Pricing: Free (3 bundles, unlimited orders); Starter $14, Advanced $39, Plus $149 a month.
- What stands out: bundle stock follows its scarcest part on every channel and per location; an hourly check fixes drift and logs why; pick lists break orders into the parts to pack.
- Honest weakness: it is new with no reviews, and it doesn't add component SKUs to orders for 3PLs (it gives a pick list instead).
- Who it is for: stores that want a free plan without an order cap. See the docs and Kizing vs Simple Bundles.
Common questions
Is there a free Simple Bundles alternative? Shopify Bundles is free, and Kizing has a free plan with 3 bundles and no order cap. The other apps here offer free trials, not free plans.
Which alternative doesn't charge by order volume? Bundle Kit, Bundly, Krunch and Kizing don't change price with order count, and Bundles.app doesn't outside Shopify Plus. Trunk does.
Can I move my bundles across? Export your bundles as rows of bundle SKU, component SKU and quantity, and import them into the new app if it supports a spreadsheet import. Turn off the old app's stock sync before the new one goes live, so two apps never adjust the same products.
How we checked
Checked on 8 November 2026 from each app's public Shopify App Store listing: rating, number of reviews, launch date, Built for Shopify badge, plans and prices. We did not install the other apps; descriptions come from their listings. Review counts and prices change, so check each listing before you decide.
Corrections: if something here is wrong or out of date, write to hello@kizing.com. We fix errors within two working days and note the change on this page.
Not on the Shopify App Store yet. This button will open the listing once it is approved.