I'm developing Shopify App (neither Private App nor Embeded App) to integrate my web service with Shopify. I will display some Shopify data in my app using Shopify Webhook API. And I don't want to publish it to Shopify App Store, because I'm going to make only my users can use it.
Is there any requirement to release my Shopify App? Review of the app, some extra service fee, or something.
I know it is possible to use Shopify API without uploading my app to the Store. And it seems that my developing app is already available in public at no charge. But I'm not sure whether some additional procedures are required or not before production release.
Thanks