Shopify App Comparison 2026

FBP | Fast Bundle Product

5.02,380 reviews
VS

ReConv Post Purchase Upsell

5.05 reviews

Which Shopify upsell app increases AOV more? Compare pricing, features, ratings & real merchant reviews for FBP and ReConv Post Purchase Upsell to find the best fit for your store.

Build product bundles quickly with mix-and-match, volume discounts, and frequently bought together offers.

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Key Features

  • Multiple bundle types including fixed, mix-and-match, frequently bought together, and subscription bundles
  • Real-time inventory sync ensuring bundles never oversell individual products
  • Customizable bundle widget with drag-and-drop layout builder
  • Subscription bundle support for recurring revenue streams
  • Seamless integration with Shopify checkout and discount system

Verdict on FBP

Fast Bundle earns its perfect 5.0 rating by delivering a polished, fast, and reliable bundling experience. Its inventory sync feature is a standout, preventing the overselling issues that plague some competing apps. The subscription bundle capability on the Growth plan also makes it a strong choice for stores building recurring revenue. If you need a versatile, well-built bundle app, Fast Bundle belongs on your shortlist.

Built for Shopify

Improve AOV with one-click upsell offers shown immediately after checkout. AI-powered or manual offers with customizable Thank You pages.

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Key Features

  • One-click post-purchase upsell offers without re-entering payment info
  • AI-powered offer generation or manual funnel creation
  • Customizable Thank You page with branded design options
  • Post-purchase funnel builder with upsells and downsells
  • No coding required with design customization matching store aesthetics

Verdict on ReConv

ReConv is a simple, free, and effective post-purchase upsell tool. It does one thing — post-checkout offers — and does it well. The one-click acceptance without re-entering payment is critical for conversion rates. The Built for Shopify badge adds confidence. With only 5 reviews it is very early stage, but the completely free pricing and focused feature set make it a low-risk addition to any store's upsell stack.

Frequently Asked Questions

Does Fast Bundle sync with Shopify inventory?

Yes, Fast Bundle includes real-time inventory synchronization that tracks individual product stock levels within bundles. When a component product sells out, the bundle is automatically marked as unavailable, preventing overselling.

Can I create subscription bundles?

Yes, the Growth plan at $19.99/month supports subscription bundles. Customers can subscribe to receive a bundle on a recurring basis, helping you build predictable recurring revenue.

What types of bundles can I create?

Fast Bundle supports fixed bundles, mix-and-match bundles, frequently bought together offers, volume discount bundles, and subscription bundles. The Starter plan unlocks most bundle types, with subscription bundles available on the Growth plan.

How does one-click upsell work?

After a customer completes checkout, an upsell offer appears. Because payment info is already on file, the customer can accept the offer with a single click — no re-entering card details. This dramatically increases acceptance rates.

Is ReConv free?

Yes, ReConv is completely free with all features included — AI-powered offers, manual funnels, Thank You page customization, and upsell/downsell sequences.

Can I create downsell offers?

Yes, the funnel builder supports both upsells and downsells. If a customer declines the upsell, you can show a lower-priced alternative.