I was excited to try this app, only to find out that it does not support payment plan integration with Shopify. Please update your description. Maybe it will offer that service again in the future. Until then, I had to go with a different app.
Hey there, I think there must have been some confusion because PayWhirl does offer the ability to create payment plans if you'd like to have customers pay for an item with several payments. We're also working on some new features to make this even easier, and they should be released soon. If you'd like I'd be happy to look at your specific use-case to see if we can help. We'd love to earn your business! Please let me know if you have any questions, we're happy to assist.