A featured add-on is one extra product, with its own discount, offered next to a subscription on the product page. You set it per plan.
Before you start
Add-ons need the Growth plan or higher.
On the Free plan the add-on settings are read-only.
Step 1: Open the add-on card
Open the plan and scroll to the Add-on products card.
Step 2: Pick the product
Click Select product under Featured add-on (product page).
Step 3: Show it and choose a variant
Tick Show on product page.
Choose the Variant.
Step 4: Set the discount
Pick a Discount type, Percentage or Fixed amount, and enter the Discount value. A percentage is capped at 100.
When the discount applies
The discount applies only when the cart also holds a different line bought on this plan.
The add-on costs full price when bought on its own.
The same rule holds when the subscription line was converted by the Mollie, BLIK or invoice buttons, so the add-on keeps its discount at that checkout.
At checkout the discount line reads Featured add-on discount.
What to do next
Show add-ons to existing subscribers: Group add-ons for the customer account.
Compare discount types: Percentage off, amount off or fixed price: choosing a discount.
Stuck on any of this? Open the chat in the bottom right corner of the app and we will help you set it up.
Last verified on 2026-10-19 against progus-subscriptions ab2b9bcd (kb-ref: sell-add-ons-with-a-subscription).