We’ve made several improvements to Contentful custom apps that help prevent accidental deletion/unsharing as well as provides you more information to manage your apps at scale.

If your app is shared, it cannot be deleted, as deletion would impact other Contentful organizations. Likewise, if an app is listed in the Marketplace, you will no longer have any way to unshare, deactivate, or delete the App Definition until it is delisted. Only Contentful can take these actions, and you can reach out to support if this is needed.

You are also now able to see the number of internal spaces and environments your app is installed in. If you need to uninstall a custom app, you can also now bulk uninstall it in all internal spaces and environments.