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Product Add-ons allow you to offer child products (cross-sells or upgrades) directly on the checkout page of a parent product. This is ideal for selling optional support tiers, extra gigabytes of storage, physical merchandise, or additional user seats. Product Addons Management

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How it works

An Add-on is simply an existing Product that is associated with a “Parent” Product. When a customer purchases the parent product:
  1. The checkout page lists the associated Add-ons.
  2. Customers can choose to add them to their cart, selecting the desired quantity.
  3. The total price is updated in real-time.

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Configuring an Add-on

To associate an add-on, edit a product in your dashboard, navigate to the Add-ons section, and click Add Product. You can customize the following parameters for the association:
  • Product: The child product you want to offer.
  • Minimum Quantity: The minimum number of units the customer must purchase if they select this addon (defaults to 0, meaning optional).
  • Maximum Quantity: The upper limit of units allowed (e.g. restrict to a maximum of 10).
  • Price Override: Optionally override the default price of the child product when purchased specifically as an add-on to this parent.
  • Is Seat Add-on?: Mark this toggle (isSeatAddon = true) if this addon represents additional user seats. (See Seat-Based Pricing).

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Managing Subscriptions with Add-ons

For recurring subscription products, customers can scale their add-ons (like adding/removing seats or storage) mid-cycle:
  • The billing manager can increase or decrease add-on quantities from their billing portal.
  • Changes trigger a prorated charge or credit based on the remaining days in the cycle.