This app lets merchants create discount codes that apply a tiered percentage discount to the whole order, based on cart subtotal. Merchants set the subtotal thresholds and percentages themselves. Each code can target a specific customer or be open to anyone, with its own start date, end date, usage limit, and notes. Discounts apply automatically at checkout once a code is entered - no manual rules per order size.

• Tiered percentage discounts by cart subtotal, applied automatically at checkout.
• Create codes restricted to one customer or open to any customer.
• Editable discount tiers - change thresholds without redeploying the app.