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Reqmunk: Require add‑ons

by MunksUpsell and cross-sell5.01 reviewFree plan available. Free trial available.

Make product add-ons mandatory — shoppers must pick the required companion before they can buy. Some add-ons aren't optional. Reqmunk requires a companion product — laces with shoes, a warranty with electronics, an install kit with a rack — before the trigger product can be bought. Target products, tags, or whole collections, and write the message shoppers see. The product page gates Add to cart until the shopper picks the companion, then adds both together. Checkout validation blocks carts that drop the add-on. No theme code edits — one app embed.

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The single review is highly positive, confirming that the app successfully enforces the mandatory nature of add-ons, which is critical for their specific business need regarding required shoe accessories.

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What it actually does

make product add-ons mandatorygate Add to cart until the shopper picks the companioncheckout validation blocks carts that drop the add-on

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