"Limit Once: Enforce one-time product purchases effortlessly in Shopify."
Limit Once prevents second-time purchases of chosen products. Select the items to cap, and the app enforces a “one per customer” rule during checkout—including express options—so repeat attempts are declined with a clear message. Setup takes minutes in Shopify, and you can turn the rule on or off per product whenever you need.
"Ensure valid checkouts with easy address and email validation."...
Create custom checkout rules to control orders without any...
Automate time-limited sales and pre-launch announcements
Validate and block checkout based on 30+ conditions