Hi, I am an app developer, I have designed an app on the android platform. I have a client with a Shopify account that has a lot of products. I would like to display their products in the app so that users can shop within the app. For this purpose I need to integrate Shopify APIs and I have a few questions.
1. Should I use Admin API or Storefront API for this purpose
2.Can I use Shopify APIs for registration and login
3.Is there a way to get the APIs using REST instead of GraphQL
4.Can I use the Shopify APIs in a way that users can comment on a product