Tiered pricing not using discount code

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I am having an issue with two of my apps, tiered pricing & a loyalty program. They both use the discount code option at checkout to alter the price of the order and so they end up cancelling each other out since Shopify can't accept more than one discount at a time. Is there a tiered pricing app that doesn't use the discount code option that I could use instead? Or any other solution to have our loyalty program running and have bulk/tiered discounts?