ABCheck is a Shopify app developed by Nextools that allows merchants to run real A/B tests on payment methods directly at checkout.
It is the only Shopify app that lets you scientifically test which payment method drives more conversions or higher average order value (AOV).
Instead of guessing whether showing Credit Card or Cash on Delivery first will convert better, ABCheck gives you hard data, split traffic between two payment method variations and measure the results.