You can upsell and cross-sell subscriptions to your customers using Upsell Wizard's PayWhirl integration. PayWhirl Recurring Payments makes it easy to create, manage, and sell subscriptions or other types of recurring payment plans through Shopify's native checkout.
The process is seamless and works automatically when you select a product with a subscription.
Please let us know if you have any questions. We're happy to help!
The Upsell Wizard Team