Fast Bundle is off the Shopify App Store. Here are 5 Alternatives

If you rely on Fast Bundle, you may have opened your Shopify admin this week to find the app gone. Fast Bundle (FBP | Fast Bundle & Upsell App) was temporarily removed from the Shopify App Store on July 18, 2026 following a security incident, and it was deactivated for existing merchants as a precaution. This guide explains what actually happened, what it means for your store and your data, and the six best Fast Bundle alternatives you can move to today if you cannot wait for it to return.

What you’ll learn in this article:

• What happened to Fast Bundle and whether your data is at risk
• What Fast Bundle merchants should do right now
• The 6 best Fast Bundle alternatives, with verified ratings and pricing
• How to choose and how to switch without losing sales
  

What happened to Fast Bundle?

Fast Bundle was removed as a precaution after a security attack, not because of a confirmed data breach. According to the developer’s official status page, the issue was detected on July 17, 2026, resolved on their side shortly after, and Shopify then temporarily removed the app and deactivated it for existing users while it reviewed the incident.

Here is the timeline the developer has published, latest confirmed steps first:

1. July 17: A security attack was detected through the support team, and the technical team began investigating.
2. July 18: As a precaution, Shopify temporarily removed Fast Bundle from the App Store and deactivated it for existing stores. This is why the app may show as uninstalled on your store.
3. July 19 to 21: Shopify requested an independent third-party Vulnerability Assessment and Penetration Testing (VAPT) report plus a formal Incident Report. A penetration test found no vulnerabilities in the areas reviewed.
   
4. July 23: Shopify verified the third-party incident report, and reinstatement is now in progress. The developer says shops will be restored to their previous plans with configurations intact.
   

​​Was Fast Bundle customer data exposed?

​​What should Fast Bundle merchants do right now?

​​First, do not panic and do not rush into an unverified replacement. Your bundle data is likely safe for now, because Shopify retains app data for up to 30 days after an uninstall. That gives you a window to decide calmly whether to wait for reinstatement or move to another app.

Beware of lookalike apps. While Fast Bundle is unavailable, several unrelated apps have started using “Fast Bundle” in their names to capture stranded merchants. The developer has confirmed it has not republished under a different name and has named apps such as “Fast Bundle Offer, BOGO, BYOB”, “Sparrow Fast Bundle Upsell App”, and “Rabbit Fast Bundle & Upsell” as not affiliated with it. Migrating to a copycat with an unverified migration process is a real risk.

👉 If your bundles are core to revenue and you cannot wait, pick a well-established alternative with a long review history and a real, verifiable developer. That is where the five apps below come in.

The 6 best Fast Bundle alternatives for Shopify

The best Fast Bundle alternatives are Kaching Bundles, Selleasy, Bundler, Simple Bundles & Kits, Zoorix, and Pareto Quantity Breaks & Discounts. All six are live on the App Store, carry hundreds to thousands of verified reviews, and cover the same jobs Fast Bundle did: Mix & Match, quantity breaks, volume discounts, BOGO, and upsells. We picked them on rating, review depth, pricing transparency, and the specific merchant they fit best. All ratings and review counts below were read from each app’s live Shopify listing on July 2026.

1. Kaching Bundles App & Upsells

Kaching Bundles is the closest like-for-like swap for Fast Bundle and the highest-rated option on this list. It holds a 5.0 rating from 4,500+ reviews, is Built for Shopify, and covers bundles, quantity breaks, volume discounts, free gifts, and upsells with built-in A/B testing and analytics. It is free to install, with paid plans at $14.99, $29.99, and $59.99 per month scaled to the extra revenue the app generates.

Best for: merchants who want a direct, feature-rich replacement with testing and reporting.

Watch for: paid tiers are capped by additional revenue, so heavy users move up the tiers.

​​2. Upsell & Cross Sell - Selleasy

​Selleasy by Logbase leans into Amazon-style “frequently bought together” bundles plus in-cart, checkout, and post-purchase upsells. It has a 4.9 rating from 2,400+ reviews and is Built for Shopify. It is free to install up to 50 orders a month, then $9, $19, or $29 per month based on order volume, and support is a frequent highlight in reviews.

Best for: stores that want automatic recommendation-style bundles across the whole funnel.

Watch for: it is upsell-first, so deep Mix & Match pricing rules are lighter than a dedicated bundle app.

​​3. Bundler - Product Bundles

​Bundler is the value pick. Its paid plans are flat monthly fees rather than revenue-based, so your cost does not climb as you sell more. It carries a 4.9 rating from 2,400+ reviews, is Built for Shopify, and supports classic bundles, Mix & Match, quantity breaks, tiered discounts, and subscription bundles. There is a free plan, with Premium at $8.99 and Executive at $12.99 per month.

Best for: growing stores that want no-limits revenue on a fixed, predictable bill.

Watch for: one review flagged issues with very high variant counts, so test if you sell products with dozens of variants.

​​4. Simple Bundles & Kits

​Simple Bundles & Kits by Freshly Commerce is the operations-heavy choice. It breaks each bundle down into its component SKUs for accurate inventory sync and 3PL, WMS, and POS fulfillment, and it bypasses Shopify’s 2,048 variant limit. It has a 4.8 rating from 700+ reviews and is Built for Shopify. The free plan covers 3 bundles and 50 monthly orders; paid plans are $14, $39, and $149 per month by Shopify plan.

Best for: merchants who ship physical kits and need real inventory and warehouse accuracy.

Watch for: its strength is fulfillment, not flashy storefront upsell widgets.

​​5. Zoorix: Bundles & Cross Sell

​Zoorix combines bundles, Mix & Match, Build a Box, and volume discounts with an AI cross-sell engine, and its Forever Free plan includes all features. It holds a 4.9 rating from 350+ reviews. Paid plans (which mainly remove app branding) run $7.99, $14.99, and $29.99 per month, scaled to revenue generated through the app.

Best for: newer or budget-conscious stores that want full features free while they grow.

Watch for: a smaller review base than the others, though the rating is excellent.

​​6. P: Quantity Breaks & Discounts by Pareto

​Pareto’s app centers on quantity breaks, tiered pricing, and volume discounts, with B2B and wholesale pricing by variant, customer tag, or market, plus discount stacking and post-purchase upsells. It holds a 4.9 rating from 250+ reviews, is Built for Shopify, and works with Shopify POS. There is a free plan, with paid tiers at $14.99, $29.99, and $59.99 per month.

Best for: B2B and wholesale stores that price by quantity, customer tag, or market and want post-purchase upsells built in.

Watch for: it is quantity and volume-pricing first, so it is less of a storefront “kit builder” than Simple Bundles.

​​Fast Bundle alternatives compared

For a wider shortlist, see our roundups of the best Shopify product bundle apps and the top Shopify upsell apps if upsells matter more than bundles for your store.

​​How to choose the right bundle app

​​Match the app to your main job to be done, not just the star rating. Ratings across these five are all excellent, so the real decision is about fit and pricing model.

• ​Want the smallest change from Fast Bundle? Kaching Bundles is the closest match in features and feel.
• Care most about a predictable bill? Bundler’s flat pricing wins as you scale.
• Ship physical kits with real inventory? Simple Bundles & Kits handles SKU breakdown and 3PL.
• On a tight budget or just starting? Zoorix gives you all features free.
• Want recommendation-style upsell bundles? Selleasy covers the full funnel.

​💡 Review volume matters more than a single star number. A 5.0 from 40 reviews is far less reliable than a 4.9 from 2,000. Letsmetrix data shows only about 1 in 10 Shopify apps ever reach 50 reviews, so the six apps above with hundreds or thousands of reviews represent a small, battle-tested group.

​​How to switch bundle apps without losing sales

​Switch deliberately so you keep revenue and clean data. Bundles touch pricing, cart, and checkout, so a careful move avoids broken carts and lost orders. Follow these four steps.

• Export your bundle config: screenshot or note every bundle, discount rule, and price before you uninstall anything.
• Verify the real developer: confirm the developer name and review history on the App Store, and ignore lookalike apps reusing the Fast Bundle name.
• Rebuild and test: recreate your bundles in the new app, then test add-to-cart and checkout end to end on desktop and mobile.
• Watch analytics for a week: compare average order value and conversion so nothing silently breaks after the swap.

👉 Not sure which apps a competitor uses for bundles? Run their storefront through the free Shopify App Detector to see their stack before you commit to yours.

Should you wait for Fast Bundle to come back?

If bundles are a nice-to-have on your store, waiting is reasonable. Reinstatement is in progress, your data should persist for 30 days, and the developer says plans and configurations will be restored. If bundles drive a meaningful share of your revenue, the downtime risk is not worth it, and moving to one of the verified alternatives above is the safer call. You can always reassess once Fast Bundle is back.

Why was Fast Bundle removed from the Shopify App Store?

Fast Bundle was removed as a precautionary measure after a security attack was detected on July 17, 2026. Shopify temporarily pulled the app and deactivated it for existing users while it reviewed an independent security assessment and incident report. The removal was a safety step during review, not a permanent ban.

Is my Fast Bundle data safe?

The developer reports no evidence that customer, store, or shopper data was exposed or leaked, based on its investigation and a completed penetration test. Your in-app bundle configuration should also remain intact, because Shopify retains app data for up to 30 days after an uninstall. Monitor the official status page for confirmed updates.

What is the best Fast Bundle alternative?

Kaching Bundles is the best all-around alternative, with a 5.0 rating from 4,000+ reviews, Built for Shopify status, and a nearly identical feature set. Bundler is the best value for predictable flat pricing, and Simple Bundles & Kits is best if you need inventory and 3PL accuracy for physical kits.

Are the “Fast Bundle” apps that appeared this week the real one?

No. The Fast Bundle developer has confirmed it has not republished under any other name while the app is unavailable. Apps that added “Fast Bundle” to their titles recently are unaffiliated, and their migration processes are unverified. Only trust updates from the official Fast Bundle status page and support team.

Will I lose my bundles if I uninstall Fast Bundle?

Not immediately. Shopify keeps app data for up to 30 days after an uninstall, so there is a grace window. Still, export or screenshot your bundle setup before switching, and rebuild in the new app rather than assuming data will transfer between two unrelated tools.

The bottom line

Fast Bundle’s removal is a precautionary pause during a security review, and reinstatement is already underway with no reported data exposure. If you can wait, waiting is fine. If bundles are core to your sales, move to a verified alternative now: Kaching Bundles for the closest swap, Bundler for predictable pricing, Simple Bundles & Kits for inventory-heavy stores, Zoorix for a generous free plan, Selleasy for recommendation-style upsells, or Pareto for B2B and volume pricing. Whatever you choose, verify the developer and check the review depth first.

Want to weigh these apps side by side on ratings, review sentiment, and pricing before you commit? Compare Shopify bundle apps on Letsmetrix and pick with data, not guesswork.