Fast Bundle (listed as FBP | Fast Bundle & Upsell App) is a Shopify bundle app for fixed bundles, mix-and-match, volume discounts, BOGO and add-ons, with plans priced by the monthly sales its offers generate. If you want a flat monthly fee instead, OC: Volume Discount Bundle App (ours) is one option, and the alternatives table below compares it with four other apps.
What Fast Bundle is
Fast Bundle launched on the Shopify App Store on November 26, 2020. Its App Store listing shows a 5.0 rating from 3,543 reviews, one of the largest review bases among bundle apps. It covers:
- Bundle types: fixed bundles, multipacks, mix-and-match, variant bundles, build-a-box, gift and subscription boxes.
- Offers: volume discounts and quantity breaks, BOGO and Buy X Get Y, product add-ons, AI “frequently bought together” and free gifts.
- Placements: product pages, collections, cart drawer and pop-ups, plus Shopify POS (see the POS caveat below).
- Extras: A/B testing, an AI bundle image generator, and an app listed in 10 languages.
The listing also says it works with subscription apps such as Appstle, Seal and Loop, and with page builders such as PageFly and GemPages. Under data access it lists cart transforms, the Shopify Functions API that can merge cart lines into one bundle line or expand a bundle into its components.
Fast Bundle pricing explained
| Plan | Monthly price | Annual price | Bundle sales covered per month | Cost at the cap |
|---|---|---|---|---|
| Free | $0 | — | Up to $500 (development stores and “eligible merchants”) | 0% |
| Standard 1K | $19 | $180/yr | Up to $1,000 | 1.9% |
| Standard 3K | $49 | $468/yr | Up to $3,000 | 1.6% |
| Standard 10K | $139 | $1,380/yr | Up to $10,000 | 1.4% |
| Enterprise | Custom | Custom | Unlimited | — |
Data checked October 16, 2026 on the App Store listing and the Fast Bundle pricing page. “Cost at the cap” is our calculation: monthly price divided by the bundle sales limit.
Three details are easy to miss:
- What counts as bundle sales. The pricing page says revenue from all Fast Bundle offers counts, including volume discounts, add-ons, mix-and-match, Buy X Get Y and frequently bought together, not only fixed bundles.
- The two pages disagree on the free plan. The App Store lists the free plan for development stores only, while the pricing page adds “eligible merchants” with a $500 monthly limit. Check which applies to your store before launch.
- POS and auto-detection. The listing names Shopify POS under “Works with,” but the pricing page lists POS integration and automatic bundle detection as Enterprise features. Auto Bundle Detection is also offered as a $49/month add-on on paid plans.
If you outgrow a tier, the pricing page says you upgrade to keep campaigns running. A store doing $2,000 a month in bundle sales lands on the $49 plan, about 2.5% of that revenue.
Fast Bundle strengths
- Breadth. Few apps cover this many bundle and offer types in one place, so you can avoid running three separate apps.
- Review volume. 98% of its 3,500+ ratings are 5 stars.
- Integrations. Subscription apps, page builders and cart drawers such as UpCart and Slide Cart Drawer are listed as compatible, which helps stores with custom themes.
- Testing. Built-in A/B testing helps you compare offers without another tool.
What 1-star reviewers report
The rating breakdown shows 21 one-star and 3 two-star reviews, about 0.7% of the total. We read the 11 most recent reviews shown on the filtered 1-star review page (of 21) and grouped the complaints:
- Billing and cancellation (2 reviews, April 2026): charges merchants did not expect, and cancellation that required contacting support.
- Cart and order reliability (2 reviews): discounts and cart updates that became inconsistent, and bundle orders packed wrongly because bundles were not flagged, with bundles missing from analytics.
- Value on lower tiers (2 reviews): key promotion features or faster support only on higher plans.
- Theme and page fit (2 reviews): a widget that did not match the theme, and bundles that worked on product pages but not on collection pages.
- Free plan confusion (1 review): a merchant expected a free version and found it was for development stores.
These are a small share of reviews, but they point to what to test: billing, fulfillment tags and your theme. Any uninstall should follow Shopify’s uninstall guide, which notes that uninstalling cancels future recurring charges, though the current billing cycle may still be billed.
Who should pick Fast Bundle
- Good fit: stores that want many offer types in one app, use a page builder or subscription app from its list, and earn enough bundle revenue that a 1.4–1.9% cost at the cap is acceptable. Just past a tier limit the share is higher: $1,100 in bundle sales on the $49 plan is about 4.5%.
- Weaker fit: stores that want a fixed monthly cost as they grow, stores with complex 3PL fulfillment that need bundle components broken out on orders (the listing does not advertise 3PL sync, so confirm with support), or small stores that only need simple quantity breaks.
Fast Bundle alternatives compared
| App | Rating | Starting paid price | Pricing basis | Best for |
|---|---|---|---|---|
| OC: Volume Discount Bundle App | 5.0 | Free (1 campaign); $7.99/mo | Flat fee | Quantity breaks and bundles on a fixed budget |
| FBP | Fast Bundle & Upsell App | 5.0 | $19/mo | Bundle sales | Many offer types in one app |
| Kaching Bundles App & Upsells | 5.0 | $14.99/mo | Added revenue, up to $10,000 | Quantity breaks with A/B testing |
| Pumper Bundles Quantity Breaks | 4.9 | Free to $300; $9.99/mo | Added revenue; $49.99 tier has no cap | Growing stores that want a price ceiling |
| Easy Bundles: Bundle Builder | 4.9 | Free to $500/mo; $29/mo | Bundle sales | Build-a-box with 3PL inventory sync |
| Simple Bundles & Kits | 4.8 | Free (3 bundles, 50 orders); $14/mo | Flat tiers | Stores where fulfillment accuracy matters most |
OC: Volume Discount Bundle App
Covers fixed, mix-and-match, variant and build-a-box bundles, quantity breaks, BOGO and free gifts, plus post-purchase and Thank you page upsells. The Plus plan is a flat $7.99/month with unlimited campaigns and A/B testing, so cost does not rise with bundle sales. Not the best fit if you need Shopify POS bundles or a long review history: the listing does not list POS, shows English only, and has 76 reviews against thousands for the leaders. For a fuller picture of the market, see our Kaching Bundles review and Pumper review.
Kaching and Pumper
Both focus on quantity breaks on the product page. Kaching has the largest review base and built-in A/B testing. Pumper’s Unlimited plan at $49.99/month has no revenue cap, which suits stores worried about tier jumps.
Easy Bundles and Simple Bundles
Both list inventory sync with 3PLs, which is worth testing if bundle orders must break into components for your warehouse. Simple Bundles uses flat tiers; Easy Bundles prices by bundle sales but says its Free and Essential caps do not apply to Shopify Plus and Advanced stores.
How to switch from Fast Bundle without breaking orders
- List every live offer (bundles, volume tiers, add-ons) and its discount before you change anything.
- Rebuild offers in the new app while Fast Bundle is still active, then turn Fast Bundle offers off one by one.
- Test the cart with each offer: price, discount line, and how the order appears in the admin and your 3PL.
- Uninstall in Settings > Apps, then check your theme for leftover blocks. Shopify notes some apps leave code that is not removed automatically.
- Confirm billing on your next Shopify invoice.
If you only need a basic bundle, read our guide to product bundles on Shopify with or without an app first.
FAQ
Is Fast Bundle free on Shopify?
It is free to install. The App Store lists the free plan for development stores; the pricing page says some eligible stores get up to $500 in monthly bundle sales free. If your store is not eligible for the free tier, paid plans start at $19/month.
What does FBP stand for in Fast Bundle?
The listing name is “FBP | Fast Bundle & Upsell App.” The listing does not spell out FBP; it is the app’s short brand name.
Does Fast Bundle need Shopify Plus?
No. The pricing page says Plus is not required, though some advanced checkout uses depend on Shopify platform limits.
Does Fast Bundle work with Shopify POS?
The listing names POS, but the pricing page places POS integration in the Enterprise plan. Ask support which plan covers your setup.
What is the cheapest Fast Bundle alternative?
OC (1 campaign), Pumper (up to $300), Easy Bundles (up to $500/month) and Simple Bundles (3 bundles, 50 orders) all list free plans for live stores. Among paid plans, OC’s flat $7.99/month is the lowest in this table.
Try a flat-fee bundle app
If revenue-based pricing is the reason you are comparing, start with one quantity-break campaign on the Free plan. Install OC: Volume Discount Bundle App and move to Plus only when you need unlimited campaigns.
