https://apps.shopify.com/checkout-extensify?locale=fi&surface_detail=checkout&surface_inter_position=1&surface_intra_position=16&surface_type=app_group&surface_version=simplified
Customize checkout page: upsells, custom fields, rules, etc | Shopify App Store
Customize each checkout page w/ upsells, custom fields, AI product recommendations, address blocking, and more.No revenue share. Exclusively for Shopify.
custom fields rulescheckout pageshopify appcustomizeupsells