Tweakday Cart Transform lets you automatically add, remove, or modify cart items using powerful line item rules. Create free gifts, bundles, warranties, and conditional fees that appear as real line items — fast, native, and no code required. Built with Shopify Cart Transform Functions for instant performance. Includes advanced checkout controls like delivery, payment, and validation rules when you need them.

• Add gifts, warranties & bundles as real line items in checkout
• Block fake, invalid, or risky orders with smart validation rules
• Hide, rename, or reorder delivery options using shipping rules
• Show or hide payment methods by cart value, country, or COD type
• Launch fast with 60+ prebuilt checkout rules — no coding needed