Fly: Bundles & Quantity Breaks vs Wiz: Checkout upsell & contentfor Shopify (2026)
Fly: Bundles & Quantity Breaks and Wiz: Checkout upsell & content both aim to increase Average Order Value (AOV) through various upsell and cross-sell strategies. However, they approach this goal from different angles and target slightly different merchant needs. Fly focuses on pre-checkout strategies using product bundles, quantity breaks, and volume discounts to encourage customers to add more items to their cart before reaching the checkout process. It emphasizes bundle creation and visual presentation within the store, offering zero-coding, natively integrated widgets, and inventory management for these bundles. Wiz, on the other hand, concentrates on optimizing the checkout experience itself, including post-purchase upsells and customization to build trust and guide conversions. Wiz provides A/B testing capabilities and focuses on the checkout flow, order summaries and post purchase interactions.
At a Glance
Fly: Bundles & Quantity Breaks
257 reviews
Wiz: Checkout upsell & content
41 reviews
Detailed Overview
Fly: Bundles & Quantity Breaks
Maximize AOV with product bundles, combos, quantity breaks, volume discounts, upsells, FBT & BOGO
Key Features
- Boost cart value with a Fixed Bundle, BOGO or Frequently Bought Together blocks.
- Drive bulk sales with tiered Quantity Break and Volume Discount triggers.
- Incentivize larger carts with a Free Gift and automated bundle upsell tools.
- Build well integrated, beautiful native widgets with zero impact on store speed
- Breakdown of bundles for auto discounting, inventory sync, fulfilment, & return
Wiz: Checkout upsell & content
Turn Checkout into a Revenue Engine with Upsells, Volume Discounts, A/B Tests & Post-Purchase Flows
Key Features
- AOV Boosters: Add upsells, discounts, subscriptions, and free gifts at checkout
- Built-in A/B Testing: Run A/B tests on every block to see what actually converts
- Post Purchase Upsells: Show post-purchase offers that feel personal, not pushy
- Customize Checkout: Add Reviews, trust badges, available discounts and more
- Free Gift: Add free gift when discount code is applied, and add gift messaging
Feature Comparison
| Rating | 5/5 | 4.8/5 |
Rating Fly: Bundles & Quantity Breaks5/5 Wiz: Checkout upsell & content4.8/5 | ||
| Reviews | 257 | 41 |
Reviews Fly: Bundles & Quantity Breaks257 Wiz: Checkout upsell & content41 | ||
| Primary Focus | Pre-Checkout Bundles & Quantity Discounts | Checkout Optimization & Post-Purchase Upsells |
Primary Focus Fly: Bundles & Quantity BreaksPre-Checkout Bundles & Quantity Discounts Wiz: Checkout upsell & contentCheckout Optimization & Post-Purchase Upsells | ||
| A/B Testing | Not explicitly mentioned | Built-in A/B Testing |
A/B Testing Fly: Bundles & Quantity BreaksNot explicitly mentioned Wiz: Checkout upsell & contentBuilt-in A/B Testing | ||
| Inventory Management | Inventory sync for bundles | Not explicitly mentioned |
Inventory Management Fly: Bundles & Quantity BreaksInventory sync for bundles Wiz: Checkout upsell & contentNot explicitly mentioned | ||
| Checkout Customization | Native widgets integrated within the store | Customize every section at checkout with trust badges, shipping info, discounts and more |
Checkout Customization Fly: Bundles & Quantity BreaksNative widgets integrated within the store Wiz: Checkout upsell & contentCustomize every section at checkout with trust badges, shipping info, discounts and more | ||
| Ease of Use | Zero coding required | Not explicitly mentioned, but implied |
Ease of Use Fly: Bundles & Quantity BreaksZero coding required Wiz: Checkout upsell & contentNot explicitly mentioned, but implied | ||
| Target Merchant | Merchants wanting to increase cart size through product bundling and quantity discounts | Merchants focused on optimizing the checkout process and post-purchase experience |
Target Merchant Fly: Bundles & Quantity BreaksMerchants wanting to increase cart size through product bundling and quantity discounts Wiz: Checkout upsell & contentMerchants focused on optimizing the checkout process and post-purchase experience | ||
- Conversion Audit
- Speed Audit
- SEO Audit
Conversion Audit
Our Verdict
For merchants primarily focused on creating and managing complex product bundles and offering appealing quantity discounts pre-checkout, Fly: Bundles & Quantity Breaks is the stronger choice. The high rating and larger number of reviews suggest widespread satisfaction with its bundling capabilities. However, if the priority is optimizing the checkout experience, adding trust elements, and employing post-purchase upsells to maximize AOV, Wiz: Checkout upsell & content is more suitable, especially for data-driven merchants who value A/B testing. Ultimately, the best app depends on where a merchant believes they can have the greatest impact on their AOV.
Common Questions
Which app is better for merchants with little to no coding experience?
Fly: Bundles & Quantity Breaks explicitly states that it requires zero coding, making it potentially more appealing for merchants who aren't technically proficient.
Which app offers more control over the checkout process?
Wiz: Checkout upsell & content focuses specifically on customizing and optimizing the checkout experience, offering more direct control over what customers see and interact with during the checkout process.
Which app is better for post-purchase upsells?
Wiz: Checkout upsell & content has features specifically designed for post-purchase upsells.
Which app provides A/B testing capabilities?
Wiz: Checkout upsell & content offers built-in A/B testing capabilities, enabling merchants to test different upsell and checkout strategies to see what converts best.
If a merchant wants to offer free gifts, which app is better?
Both apps seem to support offering free gifts as a way to incentivize purchases. Fly does it by bundling, and Wiz by adding free gifts at checkout.
Get More From Your Shopify Store
Run audits for SEO, CRO, PageSpeed, and AI visibility. Get a clear report and actionable fixes.
Try Fix My Store