Why Choose the Functions Version

The Functions version is built on Shopify Functions, allowing discounts to be applied natively in Shopify checkout. It is ideal for merchants who want a modern, seamless checkout experience and need advanced discount types that work directly with Shopify’s discount engine.

Choose the Functions version if:

• You want discounts to apply natively at Shopify checkout
  
  

• You need advanced offer types beyond basic volume discounts
  
  

• You want to use Shopify’s native discount code box
  
  

• You need support for order-level and shipping discounts
  
  

• You can work within Shopify’s 25 active discount limit
  
  

What the Functions Version Supports

Active Offers

• Up to 25 active discounts per store
  
  

• This limit is enforced by Shopify Functions and applies across all function-based discount apps installed on the store
  
  

Supported Offer Types

The Functions version supports the following discount offer types:

• Volume discounts
  
  

  • Variant-based
    
    

  • Product-based
    
    

  • Collection-based
    
    

• Bundle discounts
  
  

• Buy X Get Y (BXGY) discounts
  
  

• Order (cart-level) discounts
  
  

• Shipping discounts
  
  

All discounts are created and applied using Shopify’s native discount system.

Buy X Get Y (BXGY) Configuration

The Functions version supports flexible Buy X Get Y combinations:

• Product + Product
  
  

• Collection + Collection
  
  

• Collection + Product
  
  

• Product + Collection
  
  

For BXGY offers:

• Quantities can be defined for both X and Y
  
  

• The discount is applied to the Y group
  
  

• Supported discount types include:
  
  

  • Percentage off
    
    

  • Price discount
    
    

  • Free gift
    
    

BXGY discounts are applied natively at checkout using Shopify Functions.

Checkout & Discount Behavior

The Functions version uses Shopify’s native checkout flow:

• Discounts apply automatically at checkout
  
  

• Uses Shopify’s native discount code box
  
  

• Discounts are reflected consistently across:
  
  

  • Checkout
    
    

  • Order summary
    
    

  • Shopify Admin
    
    

This provides a smoother and more predictable checkout experience compared to draft-order–based flows.

Frontend & Theme Capabilities

• Theme integration: No
   (Only the app extension needs to be enabled)
  
  

• Product Detail Page widget: Yes
   On the product page, we display the latest eligible offer widget.
   A single product can have multiple offers, but only the most recent eligible offer is displayed.
  
  

• Offer metafield integration: Not available
  
  

• FOMO messages: Not available
  
  

Frontend customization is intentionally limited to comply with Shopify Functions performance and data constraints.

API & Admin Capabilities

Supported:

• Offer Table API
  
  

• Import / Export functionality
  
  

Not supported:

• Admin API (Offer Create, Update, Delete)
  
  

• Draft Order API
  
  

Platform Limitations to Keep in Mind

• 1. 25 Active Discount Limit

• Only 25 function-based discounts can be active per store at the same time.

• This includes all function-based discount apps installed on the store.

• 2. Product / Variant / Collection Limits

• There are limits on how many products, variants, or collections can be added to a single offer due to Shopify Function input size constraints.

• 3. Metafield Integration Not Supported

• Metafield integration is not available in the Functions version.

• Technical reason:
   The app already uses Shopify’s API to create and manage discounts on Shopify’s side. Combining metafield-based logic with offer create/update operations in the Functions version can negatively impact update performance and cause execution issues.

• To ensure stability and performance, metafield integration is not supported.

• 4. Large Cart Constraints

• Very large or complex carts may be limited by Shopify Function query size and execution limits.
  
  

App Compatibility Notes

• Hulk Product Options
  
  

  • ❌ Not compatible
     (Relies on Draft Order API, which is not supported by Shopify Functions)
    
    

• Bold Product Options
  
  

  • Supported, but requires testing once implemented
    
    

When the Functions Version Is the Right Choice

The Functions version is the right choice if your priority is:

• Native Shopify checkout discounts
  
  

• Advanced discount types (Bundles, BXGY, Order, Shipping)
  
  

• Automatic discount application without draft orders
  
  

• Shopify-standard checkout behavior
  
  

If you need unlimited active offers, metafield integration, FOMO messaging, or admin-level offer APIs, the Legacy version may be a better fit.

Want to switch to the Legacy version?
Please contact our support team, and they’ll be happy to help you with the transition.