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Stop discount codes stacking on sale prices. Protect margins with checkout rules you can test first.
Your sale is live, then a welcome or influencer code lands on top and your margin quietly disappears. Guardly rejects discount codes when the cart has sale items, checked per variant, using the codes you already have. Mixed carts still get the code on items not on sale. Stop code stacking, limit codes per order, or pause a code family during a sale. Add minimum and maximum quantities, packs and wholesale minimums. Test cart shows what shoppers will see and why, before a rule goes live.
- Reject discount codes on sale items, checked per variant, with your own message
- Re-apply the discount to items not on sale so mixed carts still save
- Stop code stacking, cap codes per order, or pause influencer codes in a sale
- Set min and max quantities, packs and wholesale minimums by customer tag
- Test any cart to see which rule fired and why, before customers ever see it
Languages
Arabic, English, Finnish, French, German, Spanish, and Vietnamese
Works with
Categories
Managing discounts
Limit rules
Notification settings
Pricing
Choose the plan that best fits your business.
Free
Free
Features
- 1 active rule
- All discount and order rule types
- Test cart with explanations
- Rule messages in cart and cart drawer
Starter
$3.49 / month
or $33.49/year and save 20%
Features
- 5 active rules
- Everything in Free
- Target by tag, first order, B2B, country
- Codes for a customer group, such as VIP
14-day free trial
Growth
$6.99 / month
or $66.99/year and save 20%
Features
- Unlimited active rules
- Everything in Starter
- Re-apply codes to items not on sale
- POS and draft orders that broke a rule
14-day free trial
All charges are billed in USD. Recurring and usage-based charges are billed every 30 days. See all pricing options
Reviews
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0% of ratings are 5 stars
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0% of ratings are 4 stars
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0% of ratings are 3 stars
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0% of ratings are 2 stars
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0% of ratings are 1 stars
Support
App support provided by smollhub.
Resources
Launched
November 12, 2026
Data access
This app needs access to the following data to work on your store. Learn why in the developer's privacy policy .
View customer data:
Sensitive data, device and activity data
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Sensitive data
Email address, physical address
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Device and activity data
Geolocation, IP address, browser and operating system
View staff and contributor data:
Store owner
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Store owner
Name, email address, phone number, physical address
View and edit store data:
Customers, products, orders, discounts, Shopify Functions
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View customers
Customer data
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View products
Products, collections
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View orders
All order history for the last 60 days
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Edit discounts
Discount codes and promotions
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Edit Shopify Functions
Cart and checkout validations
