> ## Documentation Index
> Fetch the complete documentation index at: https://subscriptions-docs.getappfox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Add-ons

> Configure subscription checkout upsells

Add-ons let you offer complementary products during subscription checkout. Customers can add these products to their recurring orders for additional revenue per subscription.

<Frame>
  <img src="https://mintcdn.com/appfox-subscriptions/QtdmwRXQ4G6I1fSq/images/13-add-ons.png?fit=max&auto=format&n=QtdmwRXQ4G6I1fSq&q=85&s=e59dd497b9ef85ce6d1702a14e90c8b5" alt="Add-ons page showing Business plan requirement" width="1280" height="346" data-path="images/13-add-ons.png" />
</Frame>

## What are add-ons?

Add-ons are products that customers can add to their subscription at checkout. They appear as optional upsells when a customer is setting up a subscription.

For example, if a customer subscribes to coffee beans, you might offer filters or a coffee mug as add-ons.

Add-ons are billed on the same schedule as the main subscription. If the customer subscribes monthly, the add-on is also charged monthly.

## Business plan required

Add-ons are available on the Business plan or higher. Upgrade your plan to unlock this feature.

## Configure add-ons

<Steps>
  <Step title="Upgrade to Business plan">
    Go to **Plan & billing** and choose the Business plan or higher.
  </Step>

  <Step title="Go to Add-ons settings">
    Click **Add-ons** in the app navigation, then click **Configure**.
  </Step>

  <Step title="Select products">
    Choose which products to offer as add-ons. These products appear as upsell options during subscription checkout.
  </Step>

  <Step title="Set pairing rules">
    Configure which add-ons appear for which subscription plans. You can show specific add-ons only when customers subscribe to certain products.

    For example, show coffee filters only when customers subscribe to coffee beans.
  </Step>

  <Step title="Save your configuration">
    Click **Save** to activate the add-ons. They will appear in the subscription checkout flow immediately.
  </Step>
</Steps>

## How add-ons work

When a customer creates a subscription, the checkout flow shows available add-ons. The customer can select zero, one, or multiple add-ons to include in their recurring orders.

Add-ons are billed at the same frequency as the main subscription. If the subscription is paused or cancelled, the add-ons are also paused or cancelled.

Customers can add or remove add-ons from their subscriptions at any time through the customer portal.

<Note>
  Add-ons apply to the entire subscription. If a customer has multiple products in their subscription, the add-on is charged once per billing cycle, not once per product.
</Note>

<Tip>
  Choose add-ons that complement your subscription products. The best add-ons are items customers use alongside the main product on the same schedule.
</Tip>