Shopify's "one use per customer" limit kills repeat sales. Discount Spark gives you the control you're missing. Set precise limits (e.g., 3 uses per customer) AND add optional reset windows (e.g., 2 uses every 30 days) to create automated, recurring promotions. Stop abuse, reward loyal customers, and turn discounts into a predictable way to boost LTV. It's the set-and-forget loyalty system you've been waiting for, managed right inside your Shopify Admin.