> Deprecated:
> Product subscription app extensions won't be supported as of December 3, 2025. You should migrate existing product subscription app extensions to [purchase options extensions](/docs/apps/build/purchase-options/purchase-options-extensions).
Spinners are used to show merchants that your app is loading, or an action is being performed. Generally when a spinner is being used, the user shouldn't be able to interact.
| โ
Do | ๐ Don't |
| ---------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------ |
| Use Spinner to show that content is loading, or an action is being processed | Donโt place Spinners for each loading element. Rather, Spinners should be at the top level of the section they apply to. |
For more guidelines, refer to Polaris' [Spinner best practices](https://polaris.shopify.com/components/feedback-indicators/spinner#best-practices).