Some stores want custom product-page UI that matches a heavily customized theme. A good back-in-stock app should support both default widgets and developer-built buttons.
Why app proxy endpoints help
Shopify app proxy routes let storefront code send signed requests through the store domain. That keeps the customer-facing implementation cleaner than calling an external app URL directly.
Common custom UI patterns
- A custom Notify me drawer instead of a modal.
- A wishlist icon in the product gallery.
- A combined size selector and notify form.
- A custom account-area wishlist link.
Developer responsibilities
Custom UI should preserve accessibility, validation, selected-variant accuracy, error states, loading states, and consent copy.
Bodanu publishes developer app-proxy documentation for custom wishlist, notify, and browser push implementations.